Jaco lies just off the eastern end of the island of Timor, part of the Tutuala subdistrict in Lautém District, and is separated from the mainland in front of Valu Beach by a 700-metre-wide (2,300-foot) channel navigable by small vessels.
It is low lying, with an area of 11 square kilometres (4.2 square miles) and a maximum elevation of about 100 metres (330 feet).
It is covered mainly by tropical dry forest, fringed by strand vegetation and sandy beaches.
There are some low cliffs on the southern coast.
Jaco lies just off the eastern end of the island of Timor, part of the Tutuala subdistrict in Lautém District, and is separated from the mainland in front of Valu Beach by a 700-metre-wide (2,300-foot) channel navigable by small vessels. It is low lying, with an area of 11 square kilometres (4.2 square miles) and a maximum elevation of about 100 metres (330 feet). It is covered mainly by tropical dry forest, fringed by strand vegetation and sandy beaches. There are some low cliffs on the southern coast.
Jaco Island