Bromo-Tengger-Semeru National Park, Indonesia

Bromo-Tengger-Semeru National Park, originally uploaded by tropicaLiving.

Bromo-Tengger-Semeru National Park, East Java, Indonesia
The national park is named after its two mountains, Mount Semeru (the highest in Java at 3,676 metres), Mount Bromo (the most popular) and the Tengger people who inhabit the area.

The park also includes large areas which are very lush and green fed by rivers from the high tops. The medium elevations are clad with much thinner forest before this gives way to the barren plateau and peaks.
When timing any activities in the area, bear in mind that sunset is soon after 5 PM and sunrise is correspondingly early at around 5:30 AM. This means you will usually need to get up by 3:30 AM or so to get to a watchpoint in time for dawn.
For the keen hiker, this park is a dream come true and you can make your own schedule.

If a landscape was ever needed to demonstrate the meaning of the phrase desolate beauty, then this is surely it. Rugged, barren volcanic peaks, gravel plains and that sea of sand. Truly unworldly.
(Wikitravel)