There are a lot of outfitters that climbs Carstensz. Mountain Trip, Alpine Ascents International, Adventure Consultants, Jagged Globe, or if you know what you're doing on a big wall with some climbing over 5.8 with fixed ropes and over 600m of rappeling, you can go direct with the local Indonesian contact of those outfitters Mr Franky Kowass of Manado Adventure (www.manadoadventure.com
). He is a nice guy and very ressourcefull but not a very technical climber.
It is a great climb mostly for the visit of the tribes of the Baliem Valley of Papua since the climb is done in about 12 hours round trip. If you can, go through Bali, it is a lot more fun than going through Manado, I know, I've done both!!!