The smouldering summit of Gunung Merapi (2891m), one of Sumatra’s most active volcanoes, looms large over Bukittinggi around 16km to the east. If Merapi is benign, then visitors typically hike overnight to view sunrise from the summit from the village of Koto Baru; it’s a 12-hour round trip. You’ll need good walking boots, warm clothing, a torch, food and drink and a guide. Travel agencies in Bukittinggi do guided trips to Merapi for around 400,000Rp per person (minimum two people).