Rescuers dug with their bare hands and bodies piled up in Nepal on Sunday after an earthquake devastated the heavily crowded Kathmandu valley, killing at least 1,900, and triggered a deadly avalanche on Mount Everest.

Army office Santosh Nepal led a group of rescuers that worked all night to open a passage into a collapsed building in the capital of Kathmandu. They had to use pick axes because bulldozers could not get through the ancient city's narrow streets.

"We believe there are still people trapped inside," he told Reuters, pointing at concrete debris and twisted reinforcement rods that were once a three-storey residential building.

Among the capital's landmarks destroyed in the earthquake was the 60-metre (200-foot) Dharahara Tower, built in 1832 for the queen of Nepal, with a viewing balcony that had been open to visitors for the last 10 years.(Reuters)