A London school has apologised after a group of teenage girls wearing uniforms, trainers and bin liners had to be rescued from a Highland mountain.
The teacher and pupils got lost in the Cairngorms
The Cairngorm Mountain Rescue Team believe the teacher's actions put the lives of the 39 young girls at risk.
The group lost their bearings in the mist after reaching the top of Meall a' Bhuachaille on Wednesday.
A spokesman for the Beth Jacobs Seminary for Girls said they would be holding an immediate internal inquiry.
The alarm was raised when the 16 and 17-year-olds and their female leader reached the top of the 2,500ft hill, in the Cairngorm mountains near Aviemore.
Rescue leader John Allen said he had never seen such a poorly-equipped party.
Mr Allen told BBC Radio's Good Morning Scotland programme: "Certainly they had a big fright when they were up on the high tops.
"They were totally inadequately prepared, with the lack of waterproofs, and the mountain rescue team members were appalled at the condition of their clothing.
"They were very cold and when the mist came down they became very, very frightened and had it been wet at all the situation could have been a lot worse."
The group reached the top of the mountain at about 1700 BST but were forced to call the emergency services when the weather worsened.
Mr Allen said he was unable to talk them off the mountain and after problems with maintaining mobile telephone signals, 10 rescuers were sent onto the hill to locate the party.
Mr Allen said: "We were appalled to discover they were all wearing skirts and trainers. Some
had bin liners and plastic sheets wrapped round them to act as waterproofs.
John Allen said the group was ill-prepared
"They had no idea what they were doing or what they were expected to be doing. When we reached them the pupils were less than polite."
He added: "It is one of the worst, if not the worst, cases that I have come across of a group being ill-prepared going on to the mountains."
Mr Allen described a ratio of one teacher to 39 pupils as "completely unmanageable".
Meall a' Bhuachaille was hit by snow only last week.
Rabbi Benyomin Dunner, head of the Beth Jacob Seminary for Girls, said the incident had been a "difficult time".
Rabbi Dunner said: "On this occasion our normal procedures governing school trips were not in place.
"We apologise to parents and pupils and will be holding an immediate internal enquiry.
"We are grateful to the Cairngorm Mountain Rescue Team for their help, it was they who ensured that nothing serious occurred.
"Beth Jacob is mindful of its responsibilities and all procedures governing school trips will be thoroughly overhauled mindful of this unfortunate incident."
A small number of the group suffering from extreme tiredness were taken by Land Rover to Glenmore Lodge, where they were later joined by the remaining members who walked off the hill.
None required medical treatment and they were on their way back to London on Thursday.