Novice climbers could be banned from attempting to climb Mount Everest, under Nepalese plans to confront safety and overcrowding concerns.
The proposals, which would also involve banning disabled and elderly climbers from the mountain, come after 18 people were killed last April at Everest's base camp in an avalanche that was triggered by the Nepal earthquake.
The regulations could have a negative impact on a major source of revenue for the impoverished country, which generates millions of dollars through selling climbing permits.
Every year about 600 climbers go to Nepal with the intention of taking on Everest, and in recent years, there has been an increase in the number of novices, relying heavily on guides to scale the 29,000ft (8840m) summit. So-called "tourist climbers" cause concern among experienced mountaineers.
The new rules would prohibit those who had not scaled a mountain of at least 21,000ft (6400m), according to Govinda Karki, the head of Nepal's tourism department.