People climbing Ben Nevis should avoid leaving waste behind in order to preserve its environment, estate landowner the John Muir Trust (JMT) has said.
Responding to the listing of the National Three Peaks Challenge as one of its ten endangered destinations of 2011 by travel magazine Wanderlust, the JMT said the key issue for Britain's highest mountain is how those heading up in their walking boots
Ideally, it said, all the 100,000 people ascending the 4,409 ft peak should put their rubbish in their rucksacks
and take it home with them, as littering is a major problem.
Even organic items varying from banana skins - which can take two years to decompose - and human waste can cause a problem, with soil composition being altered as a result.
The body concluded: "The Trust would like everyone who comes to Ben Nevis to enjoy their visit and to help keep Ben Nevis special by adopting a 'leave no trace' approach," noting this should particularly apply to Three Peaks Challenge teams.
Similar concerns about littering by Three Peaks Teams were raised concerning England's highest peak Scafell Pike by Wasdale Mountain rescue last month.