Mount Everest's Hillary Step -- a rocky outcrop just below the summit -- is now a slope, say climbers who recently returned from the mountain.

The condition of the rock face named after Everest's first summiteer Edmund Hillary has been the subject of intense speculation since climbers last year declared it had gone. Others disagreed saying fresh snowfall had caused the confusion.

Mountaineers returning from the summit this month have unanimously said that what was once a near-vertical 12 metre (40 feet) rock face is now a gradual snowy slope and makes the final ascent quicker and easier.

"The Hillary Step is not like we've known it to be," said Nepali guide Dawa Phinjo Lama Bhote, one of seven climbers AFP spoke to.

"A big stone of about five metres is gone. The area is now easier to climb," added the seven-time Everest summiteer.

The step formed part of a narrow, exposed ridge connecting Everest's south summit (8,749 metres) with the true summit (8,848 metres).

Hillary and Tenzing Norgay famously scrambled up the sheer step in 1953 when they became the first climbers to conquer Everest.