Talk:Chasm/@comment-4583259-20111123152058

I've been looking for these with 1.7.0 and am starting to think they were replaced with Astronaut_lairs.

Based on the descriptions I've found, they should go all the way to the bottom of the world, and are usually open to the sky, which would easily show up in the elevation statistics my map program compiles. Even with all the options (like exotic terrain) turned all the way up I haven't found any chasms in hundreds of superblocks (dozens of sq km).