Mt Bromo

This superb but sinister, barren, collapsed (or did it blow?) volcanic cone sits within the huge (10km across) caldera of the much older Tengger.

Approaching from the north, you need to ascend some 3km to the rim of the Tengger Caldera, then drop another 3km down the steep face of the Tenggerwall (not wholly easy at night), then cross the wide, desolate sea of lava sand that fills much of the Tengger crater.

The final climb up Bromo itself is a puff, although not that bad. The deep, active crater is fascinating, but the views out over the huge old caldera to the outer rim-cliffs, with 3,676m Semeru to the north and elegant Mt Batok Batok to the south(ish), in the atmospheric early light is your real reward.

Most people climb Bromo at night, to catch the sunrise. It is cold, so come with the right layers.

It is really wet in the rainy season, so try to climb April-October.

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