#########
<|.+++++#
###+++++#
  #-----#
  #.....#
  #+++++#
  #+++++#
  #+++++#
  #+++++#
  #.....#
  #-----#
###+++++#
<|.+++++#
#########

# wall
| drawbridge
- drawbridge
+ floor
. trench
< weaver access

victims are dropped in from above on either side, beastie "lives" in middle