diff --git a/brest/underground b/brest/underground
index 3ce422549..5760260a3 100644
--- a/brest/underground
+++ b/brest/underground
@@ -9,7 +9,7 @@ enter_x 1
 enter_y 1
 msg
 Created:  1994-02-31
-Modified: 2007-11-04 Andreas Kirschbaum
+Modified: 2008-06-06 Arvid Norlander
 endmsg
 end
 arch pstone_2
@@ -5496,6 +5496,10 @@ arch pstone_2
 x 12
 y 13
 end
+arch pstone_2
+x 12
+y 14
+end
 arch bwall_0
 x 12
 y 14
@@ -6485,6 +6489,10 @@ arch pstone_2
 x 14
 y 13
 end
+arch pstone_2
+x 14
+y 14
+end
 arch bwall_0
 x 14
 y 14
@@ -6970,6 +6978,10 @@ arch small_stones
 x 15
 y 21
 end
+arch small_stones
+x 15
+y 22
+end
 arch bwall_0
 x 15
 y 22
@@ -7440,6 +7452,10 @@ arch small_stones
 x 16
 y 21
 end
+arch small_stones
+x 16
+y 22
+end
 arch bwall_0
 x 16
 y 22
@@ -8484,6 +8500,10 @@ arch beholder
 x 18
 y 42
 end
+arch small_stones
+x 18
+y 43
+end
 arch bwall_0
 x 18
 y 43
@@ -12244,16 +12264,28 @@ arch bwall_0
 x 29
 y 24
 end
-arch bwall_0
+arch pstone_2
 x 29
 y 25
 end
 arch bwall_0
 x 29
+y 25
+end
+arch pstone_2
+x 29
 y 26
 end
 arch bwall_0
 x 29
+y 26
+end
+arch pstone_2
+x 29
+y 27
+end
+arch bwall_0
+x 29
 y 27
 end
 arch pstone_2
@@ -12268,20 +12300,36 @@ arch bwall_0
 x 29
 y 29
 end
-arch bwall_0
+arch pstone_2
 x 29
 y 30
 end
 arch bwall_0
 x 29
+y 30
+end
+arch pstone_2
+x 29
 y 31
 end
 arch bwall_0
 x 29
+y 31
+end
+arch pstone_2
+x 29
 y 32
 end
 arch bwall_0
 x 29
+y 32
+end
+arch pstone_2
+x 29
+y 33
+end
+arch bwall_0
+x 29
 y 33
 end
 arch pstone_2
@@ -12292,6 +12340,10 @@ arch door_look_2
 x 29
 y 34
 end
+arch pstone_2
+x 29
+y 35
+end
 arch bwall_0
 x 29
 y 35
@@ -12304,10 +12356,18 @@ arch door_look_2
 x 29
 y 36
 end
+arch pstone_2
+x 29
+y 37
+end
 arch bwall_0
 x 29
 y 37
 end
+arch pstone_2
+x 29
+y 38
+end
 arch bwall_0
 x 29
 y 38
@@ -12571,6 +12631,10 @@ randomitems none
 arch spell_magic_bullet
 end
 end
+arch pstone_2
+x 30
+y 30
+end
 arch bwall_0
 x 30
 y 30
@@ -12898,6 +12962,10 @@ arch pstone_2
 x 31
 y 29
 end
+arch pstone_2
+x 31
+y 30
+end
 arch bwall_0
 x 31
 y 30
@@ -13184,6 +13252,10 @@ arch pstone_2
 x 32
 y 29
 end
+arch pstone_2
+x 32
+y 30
+end
 arch bwall_0
 x 32
 y 30
@@ -13486,6 +13558,10 @@ arch pstone_2
 x 33
 y 29
 end
+arch pstone_2
+x 33
+y 30
+end
 arch bwall_0
 x 33
 y 30
@@ -13783,6 +13859,10 @@ arch generate_devil
 x 34
 y 29
 end
+arch pstone_2
+x 34
+y 30
+end
 arch bwall_0
 x 34
 y 30
diff --git a/brest/underground2 b/brest/underground2
index 304d77542..2d1c4d978 100644
--- a/brest/underground2
+++ b/brest/underground2
@@ -6,7 +6,7 @@ width 60
 height 60
 msg
 Created:  1994-02-31
-Modified: 2007-11-04 Andreas Kirschbaum
+Modified: 2008-06-06 Arvid Norlander
 endmsg
 end
 arch blocked
@@ -176,6 +176,9 @@ end
 arch blocked
 y 59
 end
+arch small_stones
+x 1
+end
 arch dun2
 x 1
 end
@@ -566,6 +569,9 @@ arch blocked
 x 1
 y 59
 end
+arch small_stones
+x 2
+end
 arch dun2
 x 2
 end
@@ -906,6 +912,9 @@ arch blocked
 x 2
 y 59
 end
+arch small_stones
+x 3
+end
 arch dun2
 x 3
 end
@@ -917,30 +926,58 @@ arch small_stones
 x 3
 y 2
 end
-arch dun3
+arch small_stones
 x 3
 y 3
 end
 arch dun3
 x 3
+y 3
+end
+arch small_stones
+x 3
 y 4
 end
 arch dun3
 x 3
+y 4
+end
+arch small_stones
+x 3
 y 5
 end
 arch dun3
 x 3
+y 5
+end
+arch small_stones
+x 3
 y 6
 end
 arch dun3
 x 3
+y 6
+end
+arch small_stones
+x 3
 y 7
 end
 arch dun3
 x 3
+y 7
+end
+arch small_stones
+x 3
 y 8
 end
+arch dun3
+x 3
+y 8
+end
+arch small_stones
+x 3
+y 9
+end
 arch dun4
 x 3
 y 9
@@ -1227,6 +1264,9 @@ arch blocked
 x 3
 y 59
 end
+arch small_stones
+x 4
+end
 arch dun2
 x 4
 end
@@ -1238,6 +1278,10 @@ arch small_stones
 x 4
 y 2
 end
+arch small_stones
+x 4
+y 3
+end
 arch dun2
 x 4
 y 3
@@ -1262,6 +1306,10 @@ arch blocked
 x 4
 y 8
 end
+arch small_stones
+x 4
+y 9
+end
 arch dun2
 x 4
 y 9
@@ -1548,6 +1596,9 @@ arch blocked
 x 4
 y 59
 end
+arch small_stones
+x 5
+end
 arch dun2
 x 5
 end
@@ -1559,6 +1610,10 @@ arch small_stones
 x 5
 y 2
 end
+arch small_stones
+x 5
+y 3
+end
 arch dun2
 x 5
 y 3
@@ -1579,32 +1634,56 @@ arch blocked
 x 5
 y 7
 end
-arch bwall_0
+arch small_stones
 x 5
 y 8
 end
 arch bwall_0
 x 5
+y 8
+end
+arch small_stones
+x 5
 y 9
 end
 arch bwall_0
 x 5
+y 9
+end
+arch small_stones
+x 5
+y 10
+end
+arch bwall_0
+x 5
 y 10
 end
 arch small_stones
 x 5
 y 11
 end
-arch bwall_0
+arch small_stones
 x 5
 y 12
 end
 arch bwall_0
 x 5
+y 12
+end
+arch small_stones
+x 5
 y 13
 end
 arch bwall_0
 x 5
+y 13
+end
+arch small_stones
+x 5
+y 14
+end
+arch bwall_0
+x 5
 y 14
 end
 arch blocked
@@ -1857,6 +1936,9 @@ arch blocked
 x 5
 y 59
 end
+arch small_stones
+x 6
+end
 arch dun2
 x 6
 end
@@ -1868,6 +1950,10 @@ arch small_stones
 x 6
 y 2
 end
+arch small_stones
+x 6
+y 3
+end
 arch dun2
 x 6
 y 3
@@ -1884,14 +1970,26 @@ arch blocked
 x 6
 y 6
 end
-arch bwall_0
+arch small_stones
 x 6
 y 7
 end
 arch bwall_0
 x 6
+y 7
+end
+arch small_stones
+x 6
 y 8
 end
+arch bwall_0
+x 6
+y 8
+end
+arch small_stones
+x 6
+y 9
+end
 arch pit_open
 hp 25
 sp 44
@@ -1900,6 +1998,10 @@ y 9
 speed 0.500000
 value 1
 end
+arch small_stones
+x 6
+y 10
+end
 arch pit_open
 hp 25
 sp 44
@@ -1912,6 +2014,10 @@ arch crater
 x 6
 y 11
 end
+arch small_stones
+x 6
+y 12
+end
 arch pit_open
 hp 17
 sp 44
@@ -1920,6 +2026,10 @@ y 12
 speed 0.500000
 value 1
 end
+arch small_stones
+x 6
+y 13
+end
 arch pit_open
 hp 17
 sp 44
@@ -1928,10 +2038,18 @@ y 13
 speed 0.500000
 value 1
 end
+arch small_stones
+x 6
+y 14
+end
 arch bwall_0
 x 6
 y 14
 end
+arch small_stones
+x 6
+y 15
+end
 arch bwall_0
 x 6
 y 15
@@ -2192,6 +2310,9 @@ arch blocked
 x 6
 y 59
 end
+arch small_stones
+x 7
+end
 arch dun2
 x 7
 end
@@ -2203,6 +2324,10 @@ arch small_stones
 x 7
 y 2
 end
+arch small_stones
+x 7
+y 3
+end
 arch dun2
 x 7
 y 3
@@ -2215,14 +2340,26 @@ arch blocked
 x 7
 y 5
 end
-arch bwall_0
+arch small_stones
 x 7
 y 6
 end
 arch bwall_0
 x 7
+y 6
+end
+arch small_stones
+x 7
 y 7
 end
+arch bwall_0
+x 7
+y 7
+end
+arch small_stones
+x 7
+y 8
+end
 arch pit_open
 hp 25
 sp 44
@@ -2231,6 +2368,10 @@ y 8
 speed 0.500000
 value 1
 end
+arch small_stones
+x 7
+y 9
+end
 arch pit_open
 hp 25
 sp 44
@@ -2251,6 +2392,10 @@ arch crater
 x 7
 y 12
 end
+arch small_stones
+x 7
+y 13
+end
 arch pit_open
 hp 17
 sp 44
@@ -2259,6 +2404,10 @@ y 13
 speed 0.500000
 value 1
 end
+arch small_stones
+x 7
+y 14
+end
 arch pit_open
 hp 17
 sp 44
@@ -2267,10 +2416,18 @@ y 14
 speed 0.500000
 value 1
 end
+arch small_stones
+x 7
+y 15
+end
 arch bwall_0
 x 7
 y 15
 end
+arch small_stones
+x 7
+y 16
+end
 arch bwall_0
 x 7
 y 16
@@ -2543,6 +2700,9 @@ arch blocked
 x 7
 y 59
 end
+arch small_stones
+x 8
+end
 arch dun2
 x 8
 end
@@ -2554,6 +2714,10 @@ arch small_stones
 x 8
 y 2
 end
+arch small_stones
+x 8
+y 3
+end
 arch dun2
 x 8
 y 3
@@ -2562,14 +2726,26 @@ arch blocked
 x 8
 y 4
 end
-arch bwall_0
+arch small_stones
 x 8
 y 5
 end
 arch bwall_0
 x 8
+y 5
+end
+arch small_stones
+x 8
 y 6
 end
+arch bwall_0
+x 8
+y 6
+end
+arch small_stones
+x 8
+y 7
+end
 arch pit_open
 hp 25
 sp 44
@@ -2578,6 +2754,10 @@ y 7
 speed 0.500000
 value 1
 end
+arch small_stones
+x 8
+y 8
+end
 arch pit_open
 hp 25
 sp 44
@@ -2606,6 +2786,10 @@ arch crater
 x 8
 y 13
 end
+arch small_stones
+x 8
+y 14
+end
 arch pit_open
 hp 17
 sp 44
@@ -2614,6 +2798,10 @@ y 14
 speed 0.500000
 value 1
 end
+arch small_stones
+x 8
+y 15
+end
 arch pit_open
 hp 17
 sp 44
@@ -2622,10 +2810,18 @@ y 15
 speed 0.500000
 value 1
 end
+arch small_stones
+x 8
+y 16
+end
 arch bwall_0
 x 8
 y 16
 end
+arch small_stones
+x 8
+y 17
+end
 arch bwall_0
 x 8
 y 17
@@ -2894,6 +3090,9 @@ arch blocked
 x 8
 y 59
 end
+arch small_stones
+x 9
+end
 arch dun2
 x 9
 end
@@ -2905,6 +3104,10 @@ arch small_stones
 x 9
 y 2
 end
+arch small_stones
+x 9
+y 3
+end
 arch dun2
 x 9
 y 3
@@ -2913,16 +3116,28 @@ arch blocked
 x 9
 y 4
 end
+arch small_stones
+x 9
+y 5
+end
 arch bwall_0
 x 9
 y 5
 end
+arch small_stones
+x 9
+y 6
+end
 arch pit_open
 hp 17
 sp 20
 x 9
 y 6
 end
+arch small_stones
+x 9
+y 7
+end
 arch pit_open
 hp 25
 sp 44
@@ -2968,6 +3183,10 @@ arch skull
 x 9
 y 14
 end
+arch small_stones
+x 9
+y 15
+end
 arch pit_open
 hp 17
 sp 44
@@ -2976,12 +3195,20 @@ y 15
 speed 0.500000
 value 1
 end
+arch small_stones
+x 9
+y 16
+end
 arch pit_open
 hp 2
 sp 25
 x 9
 y 16
 end
+arch small_stones
+x 9
+y 17
+end
 arch bwall_0
 x 9
 y 17
@@ -3254,6 +3481,9 @@ arch blocked
 x 9
 y 59
 end
+arch small_stones
+x 10
+end
 arch dun2
 x 10
 end
@@ -3265,6 +3495,10 @@ arch small_stones
 x 10
 y 2
 end
+arch small_stones
+x 10
+y 3
+end
 arch dun2
 x 10
 y 3
@@ -3273,10 +3507,18 @@ arch blocked
 x 10
 y 4
 end
+arch small_stones
+x 10
+y 5
+end
 arch bwall_0
 x 10
 y 5
 end
+arch small_stones
+x 10
+y 6
+end
 arch pit_open
 hp 17
 sp 20
@@ -3337,12 +3579,20 @@ arch skull
 x 10
 y 15
 end
+arch small_stones
+x 10
+y 16
+end
 arch pit_open
 hp 2
 sp 25
 x 10
 y 16
 end
+arch small_stones
+x 10
+y 17
+end
 arch bwall_0
 x 10
 y 17
@@ -3583,6 +3833,9 @@ arch blocked
 x 10
 y 59
 end
+arch small_stones
+x 11
+end
 arch dun2
 x 11
 end
@@ -3594,6 +3847,10 @@ arch small_stones
 x 11
 y 2
 end
+arch small_stones
+x 11
+y 3
+end
 arch dun2
 x 11
 y 3
@@ -3602,10 +3859,18 @@ arch blocked
 x 11
 y 4
 end
+arch small_stones
+x 11
+y 5
+end
 arch bwall_0
 x 11
 y 5
 end
+arch small_stones
+x 11
+y 6
+end
 arch pit_open
 hp 17
 sp 20
@@ -3675,12 +3940,20 @@ arch skull
 x 11
 y 15
 end
+arch small_stones
+x 11
+y 16
+end
 arch pit_open
 hp 2
 sp 25
 x 11
 y 16
 end
+arch small_stones
+x 11
+y 17
+end
 arch bwall_0
 x 11
 y 17
@@ -3943,6 +4216,9 @@ arch blocked
 x 11
 y 59
 end
+arch small_stones
+x 12
+end
 arch dun2
 x 12
 end
@@ -3954,6 +4230,10 @@ arch small_stones
 x 12
 y 2
 end
+arch small_stones
+x 12
+y 3
+end
 arch dun2
 x 12
 y 3
@@ -3962,10 +4242,18 @@ arch blocked
 x 12
 y 4
 end
+arch small_stones
+x 12
+y 5
+end
 arch bwall_0
 x 12
 y 5
 end
+arch small_stones
+x 12
+y 6
+end
 arch pit_open
 hp 17
 sp 20
@@ -4035,12 +4323,20 @@ arch skull
 x 12
 y 15
 end
+arch small_stones
+x 12
+y 16
+end
 arch pit_open
 hp 2
 sp 25
 x 12
 y 16
 end
+arch small_stones
+x 12
+y 17
+end
 arch bwall_0
 x 12
 y 17
@@ -4308,6 +4604,9 @@ arch blocked
 x 12
 y 59
 end
+arch small_stones
+x 13
+end
 arch dun2
 x 13
 end
@@ -4319,6 +4618,10 @@ arch small_stones
 x 13
 y 2
 end
+arch small_stones
+x 13
+y 3
+end
 arch dun2
 x 13
 y 3
@@ -4327,10 +4630,18 @@ arch blocked
 x 13
 y 4
 end
+arch small_stones
+x 13
+y 5
+end
 arch bwall_0
 x 13
 y 5
 end
+arch small_stones
+x 13
+y 6
+end
 arch pit_open
 hp 17
 sp 20
@@ -4400,12 +4711,20 @@ arch skull
 x 13
 y 15
 end
+arch small_stones
+x 13
+y 16
+end
 arch pit_open
 hp 2
 sp 25
 x 13
 y 16
 end
+arch small_stones
+x 13
+y 17
+end
 arch bwall_0
 x 13
 y 17
@@ -4726,6 +5045,9 @@ arch blocked
 x 13
 y 59
 end
+arch small_stones
+x 14
+end
 arch dun2
 x 14
 end
@@ -4745,6 +5067,10 @@ arch door_look_2
 x 14
 y 2
 end
+arch small_stones
+x 14
+y 3
+end
 arch dun2
 x 14
 y 3
@@ -4753,10 +5079,18 @@ arch blocked
 x 14
 y 4
 end
+arch small_stones
+x 14
+y 5
+end
 arch bwall_0
 x 14
 y 5
 end
+arch small_stones
+x 14
+y 6
+end
 arch pit_open
 hp 17
 sp 20
@@ -4817,12 +5151,20 @@ arch skull
 x 14
 y 15
 end
+arch small_stones
+x 14
+y 16
+end
 arch pit_open
 hp 2
 sp 25
 x 14
 y 16
 end
+arch small_stones
+x 14
+y 17
+end
 arch bwall_0
 x 14
 y 17
@@ -5177,16 +5519,28 @@ arch blocked
 x 15
 y 4
 end
+arch small_stones
+x 15
+y 5
+end
 arch bwall_0
 x 15
 y 5
 end
+arch small_stones
+x 15
+y 6
+end
 arch pit_open
 hp 17
 sp 20
 x 15
 y 6
 end
+arch small_stones
+x 15
+y 7
+end
 arch pit_open
 hp 2
 sp 44
@@ -5232,18 +5586,30 @@ arch skull
 x 15
 y 14
 end
+arch small_stones
+x 15
+y 15
+end
 arch pit_open
 hp 17
 sp 32
 x 15
 y 15
 end
+arch small_stones
+x 15
+y 16
+end
 arch pit_open
 hp 2
 sp 25
 x 15
 y 16
 end
+arch small_stones
+x 15
+y 17
+end
 arch bwall_0
 x 15
 y 17
@@ -5446,14 +5812,26 @@ arch blocked
 x 16
 y 4
 end
-arch bwall_0
+arch small_stones
 x 16
 y 5
 end
 arch bwall_0
 x 16
+y 5
+end
+arch small_stones
+x 16
 y 6
 end
+arch bwall_0
+x 16
+y 6
+end
+arch small_stones
+x 16
+y 7
+end
 arch pit_open
 hp 2
 sp 44
@@ -5462,6 +5840,10 @@ y 7
 speed 0.500000
 value 1
 end
+arch small_stones
+x 16
+y 8
+end
 arch pit_open
 hp 2
 sp 44
@@ -5490,9 +5872,7 @@ arch crater
 x 16
 y 13
 end
-arch pit_open
-hp 17
-sp 32
+arch small_stones
 x 16
 y 14
 end
@@ -5500,14 +5880,32 @@ arch pit_open
 hp 17
 sp 32
 x 16
+y 14
+end
+arch small_stones
+x 16
 y 15
 end
-arch bwall_0
+arch pit_open
+hp 17
+sp 32
+x 16
+y 15
+end
+arch small_stones
 x 16
 y 16
 end
 arch bwall_0
 x 16
+y 16
+end
+arch small_stones
+x 16
+y 17
+end
+arch bwall_0
+x 16
 y 17
 end
 arch blocked
@@ -5864,14 +6262,26 @@ arch blocked
 x 17
 y 5
 end
-arch bwall_0
+arch small_stones
 x 17
 y 6
 end
 arch bwall_0
 x 17
+y 6
+end
+arch small_stones
+x 17
 y 7
 end
+arch bwall_0
+x 17
+y 7
+end
+arch small_stones
+x 17
+y 8
+end
 arch pit_open
 hp 2
 sp 44
@@ -5880,6 +6290,10 @@ y 8
 speed 0.500000
 value 1
 end
+arch small_stones
+x 17
+y 9
+end
 arch pit_open
 hp 2
 sp 44
@@ -5900,9 +6314,7 @@ arch crater
 x 17
 y 12
 end
-arch pit_open
-hp 17
-sp 32
+arch small_stones
 x 17
 y 13
 end
@@ -5910,12 +6322,30 @@ arch pit_open
 hp 17
 sp 32
 x 17
+y 13
+end
+arch small_stones
+x 17
 y 14
 end
+arch pit_open
+hp 17
+sp 32
+x 17
+y 14
+end
+arch small_stones
+x 17
+y 15
+end
 arch bwall_0
 x 17
 y 15
 end
+arch small_stones
+x 17
+y 16
+end
 arch bwall_0
 x 17
 y 16
@@ -6203,14 +6633,26 @@ arch blocked
 x 18
 y 6
 end
-arch bwall_0
+arch small_stones
 x 18
 y 7
 end
 arch bwall_0
 x 18
+y 7
+end
+arch small_stones
+x 18
 y 8
 end
+arch bwall_0
+x 18
+y 8
+end
+arch small_stones
+x 18
+y 9
+end
 arch pit_open
 hp 2
 sp 44
@@ -6219,6 +6661,10 @@ y 9
 speed 0.500000
 value 1
 end
+arch small_stones
+x 18
+y 10
+end
 arch pit_open
 hp 2
 sp 32
@@ -6229,22 +6675,38 @@ arch crater
 x 18
 y 11
 end
+arch small_stones
+x 18
+y 12
+end
 arch pit_open
 hp 2
 sp 32
 x 18
 y 12
 end
+arch small_stones
+x 18
+y 13
+end
 arch pit_open
 hp 17
 sp 32
 x 18
 y 13
 end
+arch small_stones
+x 18
+y 14
+end
 arch bwall_0
 x 18
 y 14
 end
+arch small_stones
+x 18
+y 15
+end
 arch bwall_0
 x 18
 y 15
@@ -6541,17 +7003,23 @@ arch blocked
 x 19
 y 7
 end
-arch bwall_0
+arch small_stones
 x 19
 y 8
 end
 arch bwall_0
 x 19
+y 8
+end
+arch small_stones
+x 19
 y 9
 end
-arch pit_open
-hp 2
-sp 32
+arch bwall_0
+x 19
+y 9
+end
+arch small_stones
 x 19
 y 10
 end
@@ -6559,18 +7027,40 @@ arch pit_open
 hp 2
 sp 32
 x 19
+y 10
+end
+arch small_stones
+x 19
 y 11
 end
 arch pit_open
 hp 2
 sp 32
 x 19
+y 11
+end
+arch small_stones
+x 19
+y 12
+end
+arch pit_open
+hp 2
+sp 32
+x 19
 y 12
 end
+arch small_stones
+x 19
+y 13
+end
 arch bwall_0
 x 19
 y 13
 end
+arch small_stones
+x 19
+y 14
+end
 arch bwall_0
 x 19
 y 14
@@ -6845,24 +7335,44 @@ arch blocked
 x 20
 y 8
 end
-arch bwall_0
+arch small_stones
 x 20
 y 9
 end
 arch bwall_0
 x 20
+y 9
+end
+arch small_stones
+x 20
 y 10
 end
 arch bwall_0
 x 20
+y 10
+end
+arch small_stones
+x 20
 y 11
 end
 arch bwall_0
 x 20
+y 11
+end
+arch small_stones
+x 20
 y 12
 end
 arch bwall_0
 x 20
+y 12
+end
+arch small_stones
+x 20
+y 13
+end
+arch bwall_0
+x 20
 y 13
 end
 arch blocked