Treacherous terrain hampers rescue efforts for crashed Indonesian plane

People walk into the entrance of Trigana Air's office in Jakarta, Indonesia August 16, 2015. REUTERS/Darren Whiteside

JAKARTA (Reuters) - Treacherous terrain in Indonesia's Papua province on Monday hampered rescuers' efforts to reach a passenger plane that crashed with 54 aboard, the latest in a string of aviation disasters in the sprawling Southeast Asian archipelago.

Rescuers have yet to detect the aircraft's black boxes and news of survivors depends on a ground team now trekking slowly towards the mountainous area, the rescue official overseeing the search said.