Gunung Mulu National Park

Located near Miri of Sarawak, Gunung Mulu National Park is a UNESCO World Heritage Site and is famous for the Pinnacles and Caves.

There are many tours available, including

[1] Pinnacles Only
http://www.mulunationalpark.com/tour-packages-3D2N-Mulu-Pinnacles.php
Day 1: Airport - Longboat - 3 hours jungle trek to 'Camp 5'
Day 2: Ascend 3 hours to Gunung Api with view of Pinnacles and return to Camp 5
Day 3: Back home using the same way.

[2] Caves & Pinnacles
http://www.journeymalaysia.com/rainmulupinnacles.htm
Day 1: Airport - Deer Cave & Lang Cave
Day 2: Longboat - Wind Cave & Clear Water Cave - 3hour jungle trek to 'camp 5'
Day 3: Ascend 3 hours to Gunung Api with view of Pinnacles and return to Camp 5
Day 4: Back home

Sound easy enough, there are a warning issued by the tour agency however, that the climb is difficult and consist of many vertical climbs and that one afraid of heights are not recommended. I am seriously considering if this is something I should strive for even with plenty of training; if so this would be mission 2013.