Jailolo, Stratovolcano in Halmahera, Indonesia.

Jailolo is a stratovolcano on Halmahera island that rises to about 1130 meters in height. The volcano features a central cone above a large crater basin called Idamdehe, which stretches roughly 1.6 kilometers across on the western side.

Jailolo is a stratovolcanic complex on the Jailolo Bay peninsula, west of Halmahera, rising to 1,130 m. Its eastern flank carries lava flows, while small calderas lie on the west and south-west sides. The Kailupa cone, off the southern coast, forms a small volcanic island. The sources record no dated eruption, including none in 1883.

The volcano rises above the town of Jailolo, on the west coast of Halmahera, and the two share a name. The mountain's name is also used for the bay and the peninsula it stands on, so the same word marks the peak, the water and the settlement below it.

A speedboat from Ternate is the main way to reach the area, taking around 50 minutes across the water. Once there, local guides and transport can help visitors navigate the terrain for hiking and exploration.

Hot springs emerge naturally along the northwestern coast of the crater basin, creating a geothermal feature that contrasts with the surrounding landscape. The smaller Kailupa cone forms a separate island off the southern peninsula, adding to the complex volcanic geography.