![](https://birdviewing.com/wp-content/uploads/500/Black-nest-Swiftlets-Gomantong-Caves-Borneo_20190715_3347.jpg)
Jul 15 2019
Black-nest Swiftlets nest in caves. Gomantong caves are not for the faint-hearted. The smell is overpowering and the floors covered with droppings are alive with cockroaches
Jan 21 2020