Climbing enthusiasts have been warned of the dangers of using stoves inside their tents
at high altitude after one man nearly died doing so.
Alpine Club member Dave Wynne-Jones
that he had to be resuscitated after he became unconscious and stopped breathing during an expedition to Mongolia.
He revealed that he went into a fit and had to be rescued by other climbers nearby.
warned others to be vigilant when using stoves in their tents
, claiming that many people are unaware of the dangers at high altitude.
"All the work on the levels of CO [carbon monoxide] required to cause unconsciousness are based on sea-level pressure levels and little is known on the levels of CO required to do this at altitude," he told the news provider.
Symptoms of CO poisoning include severe headaches, breathlessness, nausea, dizziness, chest pains and loss of consciousness.