Hamarapi is a location that appears in the Sonic Underground television series. It is a vast desert located on Mobius where the pyramid of Aman-Rapi is located. The location itself is seemingly named after Aman-Rapi himself.
Learning through the Royal Hedgehog Crest of their ancestor predicting the invasion of Dr. Robotnik, the Sonic Underground traveled to the desert in order to retrieve the Scroll of Aman-Rapi, which would contain information on stopping Dr. Robotnik. The Sonic Underground arrived at Hamarapi and had to fend off Sand Snakes as well as Sleet and Dingo before making it into Aman-Rapi's pyramid.