Cave of Hera

The Cave of Hira/Hera is the cave that Muhammad allegedly received dictation of the Koran in. The name Hera is the name of the Queen of Heaven who opposed her brother-husband Zeus (who is the Abrahamic God) and tried to undo his work.

http://blogs.reuters.com/faithworld/2012/10/24/meccas-hera-cave-one-of-early-islams-rarest-relics/

https://en.wikipedia.org/wiki/Hira