Mataram, Indonesia - More than 500 hikers and guides stranded by landslides on an Indonesian mountain after an earthquake has returned to safety, with some recalling their terror when tonnes of rock cascaded down.

The Mount Rinjani National Park management has revealed around 500 people, including 135 foreigners, are to be evacuated from the volcano area, which was hit by a landslide after a magnitude 6.4 earthquake struck West Nusa Tenggara on Sunday morning.