Day 1 of 4: Sembalun Village (1.150.m) – Sembalun Crater Rim (2.639.m). A four day trek always starts with day 1. Starting at 1150 meter of elevation in Sembalun village, we walked up about 1500m of elevation in one day to the Sembalun Crater Rim. With my good friend Kate Crompton, who amazingly decided to join…