North Head is a cliffy promontory rising to a hummock, high. There are several explanations of earth hummock formation. The true summit is the South Eastern hummock, much degraded. At its northern end is the Moswetuset Hummock. Their eastern limits were around the Hummock Range. This is the most widely accepted explanation of cryogenic hummock genesis. "Hummock", an hillock of broken ice that forms an uneven surface. He named the outcrop the Sloping Hummock during his 1799 visit. Flinders also progressively named the nearby Circular Head, Three Hummock and Hunter Islands. He later patented another of land on September 23, 1683, naming it "Musketa Hummock". In southwest Australia they occur in hummock grass in mallee. The tomb was located on the southern hummock in a "sylvan glade". He visited Three Hummock Island in the Bass Strait. The sachem Chickataubut had his summer home at Moswetuset Hummock in the early 17th century. A hummock is a small knoll or mound above ground.