After a bit of refinement, here's my entry for this year's One Page Dungeon contest.
To use it you'll need two circles of cellophane (one blue, one red, each 2.5cm/1" round), but it says that on the page anyway.
There may be another update to this map in the week or so before the contest entries are formally closed for the year.
Deadlands - Seeking Explorers
5 days ago