Gripping a few tough wires, taut across the river, the ferryman pulls passengers on a wooden boat from one side of the river to the other.
"This ferry has been operating since 1968 and it's never capsized," says Pak Kuat, above. He estimates that he pulls the ferry across the river 400 times a day, with a maximum load of seven passengers per crossing. "Noon is busiest, when people come home to rest," he adds.
"I start work at 6am and finish at 10pm. I sleep on the boat too," Kartono says. At the rear of the wooden boat is a single mattress covered with a sarong. "There are three of us who work this ferry," he continues. "What I like about being a ferryman is that I'm close to my friends."
A twist of three wires spans the river. On either side is a wooden post staked with a vertical row of nails. The height of the wire across the water is determined by which nail-notch the wires are supported by.
"Where are you going?"
"Nowhere!" they reply.
"My name is! My name is!" they chant, elbowing each other and giggling. Children can cross the river for free.