I purchased a compass and a thermometer in Bangkok, Thailand, I hooked it on my camera bag.
I was on a rented motorcycle; I was not able to find a map. I kept asking for Garung Merapi and finally had people point. At one juncture, though I decided I needed to look at the Compass.
The Danger of going to see Mount Merapi Volcano was not the Volcano; it was the motorcycle ride to the volcano. There are no rules, everyone runs stoplights, passes on the left, passes on the right, stops, turns, and nothing is predictable except chaos.