Some notable links:

World Ribus project – Homepage for updates about Ribus across Earth. Including free wall maps and a downloadable database of thousands of mountains.

Pedantic Press – British publisher of excellent books about mountains, including ‘The Relative Mountains of Earth: The Ribus’.

The Smithsonian – A fantastic resource with pictures and data for thousands of volcanoes across the planet.

Volcanological Survey Indonesia – Stay up-to-date with the latest alerts about volcanic activity in Indonesia.

Trekking East Timor – A great site about hikes and culture in Timor-Leste.

Java Lava – Legendary Jakarta-based informal hiking group for expats.