One of the place is Kawah Putih or "White Crater". It is an inactive volcano crater filled with water. It is located about 40km from Bandung. If you are from Bandung, it is advisable to start you journey as early as 7.00 AM to avoid road congestion espeacially if you are travelling on weekend. The place is popular among local and foreign tourist.
Unlike Tangkuban Perahu (http://investandtravel.blogspot.com/2008/09/tangkuban-perahu-bandung.html), there is less street vendor and there should less probability you will duped by them as most of them are licensed by Park Ranger.
The air toward the crater is fresh. But as soon as you arrive at the crater, the strong smell of sulfur will suffocated you. It is advisable to wear mask and drink a lot of plain water to neutralize the effect of sulfur.
