Siayan is one of the Batanes Islands. Also known as Ditarem Island in the native language,[1] the island is about 1/2 mile to 3/4 miles in diameter and lies about 5 miles (8.0 km) north-northeastward of Itbayat Island. The closest island is Mavulis Island which is about 1.5 miles (2.4 km) 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.[2]
Native name: Ditarem | |
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Geography | |
Location | Luzon Strait |
Coordinates | 20°54′12″N 121°54′10″E / 20.90333°N 121.90278°E |
Archipelago | Batanes Group of Islands |
Administration | |
Philippines | |
Region | Cagayan Valley |
Province | Batanes |
Municipality | Itbayat |
Siayan has an elevation of 538 ft (164 m) and is listed as an inactive volcano[3] by the Philippine Institute of Volcanology and Seismology.