Amateur climbers will be banned from scaling Everest under tough new proposals unveiled by Nepal in the wake of a spate of deaths on the world's highest peak.

Training and experience in high altitude climbing must be mandatory for all climbers on mountain and other high peaks, a government panel said on Wednesday, following the deadliest climbing season in four years.

Eleven climbers were killed or went missing on the 8,850 metre (29,035 feet) mountain in May – nine on the Nepali side and two on the Tibetan side.

The Nepali panel - made up of government officials, climbing experts and agencies representing the climbing community - was set up after climbers and guides criticised officials after the deaths for allowing anyone who paid $11,000 to climb Everest.

Nepal is home to eight of the world’s 14 highest mountains, including Everest, and mountain climbing is a key source of employment and income for the cash strapped nation.