From Penelokan, there’s a good paved road via Seked and Prajurti. Since Toya Bungkah gets little traffic, bemo drivers first want Rp1500; when you get in, the price suddenly skyrockets to Rp15,000, eventually falling to Rp8000. Just wait until a public bemo comes along and pay Rp1000. Alternatively, you can hitch a ride down to the crater from a tourist or a truck, then walk to Toya Bungkah from Kedisan in an hour. Or take a boat from Kedisan.