Hiking up Gunung Kerunai (1000m) takes about 3h30m with full load for camping. The scenery is very nice, consist of Gunung Kenderung next to it, and plenty of clouds.
The top is big enough to host more than 20 of us, and it could get pretty windy.
In the morning the are sea of clouds, and you could watch the sunrise.
We get to hike down via another path, which is nice. The view of the way down is very nice as well.