well, ive never had this happen before, so I really don't think its a mod issue (I don't think any of my mods actually mess with map generation stuff)
(after the happening)
http://i.imgur.com/tacxAce.jpg
(before), not exactly the best, most of this was just used to discuss in a discord
http://i.imgur.com/WiN3wJy.jpg
http://i.imgur.com/3NNsiOj.jpg
http://i.imgur.com/YR6sFLi.jpg
....
no idea what happened
(after the happening)
http://i.imgur.com/tacxAce.jpg
(before), not exactly the best, most of this was just used to discuss in a discord
http://i.imgur.com/WiN3wJy.jpg
http://i.imgur.com/3NNsiOj.jpg
http://i.imgur.com/YR6sFLi.jpg
....
no idea what happened