The Unnamed Mountain Island is an island seen in the concept art of Crash Bandicoot 2010. It is mostly taken up by a large, gray, mountain. It might be a version of N. Sanity Island, but the mountain does not have snow on the top like N. Sanity Island's mountain. It might have served as background scenery or it could have been intended to be played on.
Crash Bandicoot 2010