The farthest north and largest of all tectonics, Rulgal (sometimes written Rul Gal) reveives the least moonlight of any surface on the Avantsphere, making it the coldest and most sparsely populated.

It is a common knowledge that twibbers claim this to be their homeland "from past lives", though it seems to be more for the purpose of supporting their chemical addiction to the mind-altering affects of the mud blossoms that grow there.