The area is located south of Ouddorp. Even before the closure of the Grevelingen, the island was in the interest of nature lovers because of the frequent occurrence of various species of coastal birds, such as the Great Tern. Unfortunately, the breeding colony that was established at Hompelvoet was abandoned. In 2007/2008 a new island was built on the western tip of Hompelvoet. With the aim of making an attractive breeding ground for coastal birds.
De Hompelvoet has developed into an island with large, open and very flowery plains and rugged thickets. Various special plant species are found here, including species that appear on the Red List (rare, or even endangered species elsewhere). Remarkable is the discovery of the Autumn Screw Orchestra a few years ago. This orchid species only occurs in two other places in the Netherlands.
The Hompelvoet is grazed with Fjord horses that stay there all year round. Cows and calves will be added from mid-May, which will be removed again in mid-November. The island is not accessible during the breeding season (15 March to 15 August). During this period the island is guarded by a bird watcher who observes the birds and performs counts. He also conducts research into the plant world.