Siayan is one of the
Batanes Islands
Batanes, officially the Province of Batanes ( ivv, Provinsiya nu Batanes; Ilocano: ''Probinsia ti Batanes''; fil, Lalawigan ng Batanes, ), is an archipelagic province in the Philippines, administratively part of the Cagayan Valley region. It i ...
. Also known as Ditarem Island in the native language, the island is about 1/2 mile to 3/4 miles in diameter and lies about north-northeastward of
Itbayat Island. The closest island is
Mavulis Island which is about north-northeastward of Siayan. There are several detached rocks off Siayan's northeast side, rendering the channel between it and Mabudis unsafe for larger vessels.
Siayan has an elevation of and is listed as an
inactive volcano
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
On Earth, volcanoes are most often found where tectonic plat ...
[PHILVOCS, ]
List of Inactive Volcanoes in the Philippines
'. Retrieved on 2010-08-24. by the
Philippine Institute of Volcanology and Seismology
The Philippine Institute of Volcanology and Seismology (PHIVOLCS, ; tl, Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and ...
.
See also
*
List of islands of the Philippines
As an archipelago, the Philippines comprises about 7,641 islands clustered into three major island groups: Luzon, the Visayas, and Mindanao. Only about 2,000 islands are inhabited,
References
Islands of Batanes
{{CagayanValley-geo-stub