Indonesian authorities are urging people not to climb the active Mount Agung volcano on Bali after a video of a foreigner standing at the edge of its smoking crater circulated online.

Disaster Mitigation Agency spokesman Sutopo Purwo Nugroho says the volcano is "very dangerous" and could explode anytime.

Le Mont Agung (3000m et des poussières).. "STRATOVOLCAN" Depuis un mois, en activité inquiétante ... LA semaine dernière...

Posted by Karl Kaddouri on Thursday, 5 October 2017

It's been at its highest alert level since September 22, sparking an exodus of more than 140,000 people from the area.

The video posted on Friday on Facebook shows Karl Kaddouri who speaks in French while plumes of steam rise from the crater he is perched above.

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A woman gives offering before she works at a field with the Mount Agung volcano in the background in Karangasem, Bali yesterday. Photo / AP
A woman gives offering before she works at a field with the Mount Agung volcano in the background in Karangasem, Bali yesterday. Photo / AP

Last week, four Hindu priests angered authorities by posting a video of the crater after climbing the peak to pray.

Mount Agung last erupted in 1963, killing more than 1100 people.