morning traffic at mahakam river, samarinda. tugboat towing huge barge loaded by black coal at mahakam river

asia barge black boat borneo bulk business carbon cargo carrier change coal commodity earth economy energy environment exploitation export ferry fossil freight fuel huge hulu indonesia industrial industry landscape load loaded mahakam melak morning natural nature navigation outback outdoor panorama passenger remote resources river samarinda scenery scenic shipping sustainability towing trade traditional traffic transport transportation travel tropical tugboat ulu vessel water wooden