IT was dusk, the right time for Saiful Alam to venture into the forest. The 36-year-old man is a tour guide in West Belitung, tasked with helping tourists find tarsius (tarsius bancanus saltator)-a small, beady-eyed primate that comes out at night.

Guided by a headlamp, on Wednesday two weeks ago, he led two students from the Bandung Institute of Technology into the protected forests of Gunung Tajam.

The adventure began with a one-kilometer hi