Welcome to Monoliths!
This mod basically just adds weird huge square pillars that are 4 chunks big, has ores on it too, it will lag the game(sorry for that), and thats bascially it, i hope you try it out, this isnt the best description either way, but i hope you like it!
WARNING!
THIS IS VERY LAGGY ON 1.21.11! PLEASE DONT TRY!
- MaceMeta