Fort Du Bus, Dutch colonial fort in Triton Bay, West Papua, Indonesia

Fort Du Bus no longer stands: only a monument marks its site at the head of Triton Bay, east of Kaimana. In 1828 the Dutch built several small buildings enclosed by a double palisade; by 1839 Jules Dumont d'Urville found only a few building remains, a coconut-palm avenue and a lemon grove.

The Dutch established Fort Du Bus in 1828 as their first European settlement in New Guinea to counter British presence in the region. They abandoned the site seven years later, withdrawing from this part of Papua.

The post's name honoured Leonard du Bus de Gisignies, then Governor-General of the Dutch East Indies. Local chiefs Sendawan of Namatota, Kassa of Lahakia and Lutu of Lobo and Miwara signed treaties with the Dutch and received silver-headed staffs as symbols of their appointed authority, alongside 28 subordinate chiefs.

The location sits along a remote coastal section in present-day Kaimana Regency in West Papua, accessible by water. A visit requires good planning since the region is sparsely populated and logistically challenging to reach.

French explorer Jules Dumont d'Urville discovered remnants of a lemon grove and a row of coconut palms at the ruins during his 1839 expedition. These plantings show how settlers tried to recreate familiar surroundings in this remote location.