Calayan is home to 15 named mountains. The highest is Mount Pangasun at 1,088 m.
There are 15 named mountains in Calayan. The highest and the most prominent mountain is Mount Pangasun.

Yes. Calayan has 15 named mountains. The highest is Mount Pangasun at 1,088 m.
The highest mountain in Calayan is Mount Pangasun, at 1,088 m.
Calayan has 15 named mountains.
