Cthulhu Regio References Cthulhu Regio region of Pluto Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Pluto/ The surface and interior…its shape and later dubbed Cthulhu Regio, this region has a varied topography with plains, scarps, mountains, and craters. This region’s dark colour arises from organic compounds called tholins. Read More…its shape and later dubbed Cthulhu Regio, this region has a varied topography with plains, scarps, mountains, and craters. This region’s dark colour arises from organic compounds called tholins. Read More