Relatives of Philip Goodeve-Docker have paid tribute to him in a Facebook post:
We wanted to let everyone know that on Sunday morning we had a phone call to confirm that Philip sadly died.
To our son, brother and friend, we are so glad that you were on your adventure and expedition that you had wanted to do for so long. You will be unbelievably missed and your memory cherished. xx
The 30-year-old charity promoter from Ealing, London, was said to be "on the expedition of his lifetime" with two friends in Greenland, when the group got into difficulty on Sunday.
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The little boy cried for help but began making the two-mile journey home on his own when there was no response.