User blog:AlatarOfGram/Strange goings on...

So my brother was playing in Nan Curunir, and he found these structures randomly spawn, he was not in a server, and as far as I can tell, they might be glitches with block IDs yet I have no other mods than forge and the lotr one. So can you guys have a look and tell me what you think.

never mind, my screenshots folder will not load, speaking of which, I can get into the .minecraft folder, and when I click the screenshots, it says there is a I/o error, which I thought was geek for idiot operator so if I could have your thoughts on this aswell that would be nice.

the structures were a thin hill of oak wood slabs one on top of each other in an almost treeish pattern. and then random cobblestone blocks and a few glass ones in a row, they were definitely not part of a road. so please enlighten me community.