A Ribu is a prominent mountain summit with at least 1,000 metre elevation drop all around. That is, a mountain with a topographic prominence of 1,000 metres or more.
Conceived in 2009 in Java, Indonesia, we called them the Ribus because of the Indonesian word ‘ribu’ meaning a thousand. Our site covers Ribus in the countries of Indonesia, Malaysia and East Timor.
The variety of Ribus is huge; some are easy day-hikes near large cities; others are in remote and challenging environments and require weeks of travel and hiking to reach; some are active and dangerous volcanoes.
There are four Ribu categories, three based on their absolute elevation and a fourth ‘Spesial’ category for peaks which are considered to be of special interest. Check the Methods page for more information on the analysis of prominence.
Over 3000 m elevation
2000 to 3000 m elevation
Below 2000 m elevation
A special reason to bag it
There are currently 274 Ribus, plus 138 Spesial peaks across the Indonesian archipelago.
The ‘Spesial’ category has a number of uses. Spesials are deemed of particular interest. For example Anak Krakatau is a mere 157 metres high, but is a Spesial because of its volcanic activity and great historical interest.
As of late 2020, a group of mountain lovers scattered across the globe are currently putting together a list of all the Ribus in the world, with information such as name, elevation and prominence. There may be around 7000 of them so this may take some time! Current progress can be seen at the World Ribus project website.
You may find the following two files useful in planning your hiking trips across Malaysia and the Indonesian archipelago:
An Excel spreadsheet with all the Ribus and Spesials listed, along with elevation, prominence, province, plus latitude and longitude data.
A KML file with all the Ribus and Spesials listed, for use with Google Earth.