This extraordinary image was taken during the recent heatwave.

But the snow is less of a surprise as the team are trekking to the top of Britain's highest mountain, the 1,345 metre (4,411 ft) Ben Nevis.

The team of nine from Dover were taking on the Three Peaks Challenge last Saturday while the rest of the country blistered in weeks of temperatures going beyond 30C.

And by today they had raised £2,853 for Teenage Cancer Trust, smashing their target of £2,500.

The workers on the Dover Western Docks Revival took on a gruelling 26-mile trek within 24 hours.

Their climb added up to 3,000 metres, equivalent to walking a third of the way up Mount Everest.

David Frazer, DWDR building surveyor at the Port of Dover, said: “ It was a great achievement, and our programme of training led by our Project Manager Steve Rawlings definitely paid off.

"We are very proud to have taken part in this very worthwhile cause."

Six other members of the Port of Dover took part: Charles Baxter, Belle Sierina, Simon Greenhalgh, Kieran Epps, Josie Sinden, Owen Balmont and Adrian Millsted.

The ninth members was Jeremy Lush of the redevelopment's building consortium VSBW (VolkerStevin and Boskalis Westminster).

The team support and mini drivers were Jason Groombridge and Tracy Taylor, again from the Port of Dover.

The £250 million DWDR involves the redevelopment of the Dover Western Docks, the single biggest investment by the Port of Dover.

Apart from Ben Nevis in Scotland the other Three Peaks are Snowdon in Wales, which is 1,085 metres (3,650 ft) and England's Scafell Pike in Cumbria.

That is 978 metres high or 3,209ft.

Around seven young people aged between 13 and 24 are diagnosed with cancer every day in the UK and Teenage Cancer Trust is the only charity dedicated to supporting young people stricken by the disease.

But the charity does not have enough nurses and and can only help half of young people affected.

You can carry on contributing to the Dover team's cause via .justgiving.com/fundraising/dwdr3peakchallenge.