Langun-Gobingob Cave System

File:Sharp stalagmites at the floor of Langun-Gobingob cave.jpg

The Langun-Gobingob Cave System also known as Calbiga cave is a cave system located at Calbiga within the Samar Island Natural Park. It covers an area of approximately 2,968 hectares.{{cite web |url=https://trexplore.ph/ph-longest-cave-discovered-samar/ |title=PH ‘longest cave’ discovered in Samar}} The cave system has 12 caves including Langun, Gobingob, Lurodpon and Bitong Mahangin.{{cite web |url=https://www.traveling-up.com/exploring-the-underworld-calbiga-caves-samar/ |title=Exploring the Underworld: Calbiga Caves, Samar}}