Ranu Kumbolo, Mountain lake in East Java, Indonesia
Ranu Kumbolo is a mountain lake nestled in Bromo Tengger Semeru National Park in East Java, surrounded by hiking trails at high elevation. The water feeds several sources and serves as an important water supply for the region.
The first documented camping site at this location was established by Dutch explorers in the early 1900s. Since then it has grown into a recognized destination for climbers from around the world.
This lake serves as a gathering place where mountain climbers from different routes meet and mingle during their journeys. It holds meaning for the local communities living in the surrounding villages who depend on these waters.
The area requires permits from the ranger office and warm clothing due to very cool conditions. Visitors should arrive early to experience better light and less crowded conditions.
The water here is pure and drinkable, making it a valuable resource for extended trekking journeys. On clear nights the high elevation offers stunning stargazing views that many visitors do not anticipate.
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