This is the Grootslang. I created this cryptid creature / monster art for Fairytales and Myths.
The Grootslang is a cryptid from South African folklore. Grootslang means “Great Serpent” in the Afrikaans language of South Africa. Afrikaner legend describes the Grootslang as a gigantic primeval snake that lives in a pit or subterranean cave in a remote part of Richtersveld, a desert in the Northern Cape province of South Africa. Legends refer to the cave in which Grootslang lives as the Bottomless Pit or Wonder Hole.
Check out the Grootslang page for more details.