Board Thread:Game Help/@comment-26326296-20150605051141

I was digging around on the near-surface dirt level when all of a sudden I noticed that the wall looked like scales. I haven't seen this background before, and I can't find anything like this on the wiki. It is under the Forset, and the BG music is the Underground theme, but it seemed like it may have chenged slightly. There were no gems or much of anything at all. I am a bit confused and what like to know if I missed something special. 