Kisar, also known as Yotowawa, is a small island in the Southwestern Moluccas in Indonesia, located to the northeast of Timor Island. Most of the island is included within the Southernmost Islands District (Kecamatan Pulau Pulau Terselatan) within the Southwest Islands Regency of Maluku Province. The District previously also includes the larger (but less populated) Romang Island further north, but this with its own outliers was subsequently split off to form its own district (Kecamatan Kepulauan Romang). The rest of the island forms the North Kisar District (Kecamatan Kisar Utara) within the regency. It is one of the 92 officially listed outlying islands of Indonesia. The principal town is Wonreli, with 6,652 inhabitants at the 2010 Census. Geography, geology and ecology Kisar is similar geographically and geologically to the nearby islands of Timor, Leti, and Moa. The interior of the island is hilly, with several small mountains lined roughly east–west. The highest of these, Gunung Taitulu, rises approximately above sea level, and from the top, nearby Wetar and Timor are easily seen. The entire island is encircled by a series of rugged limestone cliffs that look like giant stairsteps rising from the coast. These uplifted terraces represent former coral reefs that have been thrust from the sea due to the active tectonics of the region. Those terraces are also gently warped. An uplift rate of the island of approximately 0.5 mm/yr over the past several hundred thousand years has been calculated by obtaining ages of coral samples from the terraces. The rocks exposed in the interior of the island are primarily composed of low to medium-grade metamorphosed sedimentary rocks, with scattered amphibolites. The metasedimentary rocks are quartz-rich and the amphibolites represent mafic igneous intrusions. Age analyses of detrital minerals, petrology, and geochemistry all indicate that the island belongs geologically with the other islands of the Outer Banda Arc. This series of islands formed when the northern edge of the Australian continent was upthrust in collision with southeast Asia. These islands are paralleled by the Inner Banda Arc, a series of active and extinct volcanic islands, including neighboring Wetar. The islands in the Banda Arc are arranged in a distinct horseshoe shape and represent a young, emerging mountain belt. Thus, Kisar represents one peak of a new mountain range rising from the sea. The Timor Monitor (Varanus timorensis) is found in Kisar. Language The Kisar language (a trade language, also known