A polar explorer from Nottinghamshire who broke the record for walking to the South Pole unaided wants to tackle a remote Canadian lake.
Fiona was joined by her husband at the South Pole in 2004
Fiona Thornewill, 38, will try to cross the Great Bear Lake with her husband and a team of six novices in February 2005.
She set a record by walking alone to the South Pole in 2004 in 41 days - faster than any other man or woman.
Temperatures during the 10-day, 119-mile (190 km) trip may reach -50C.
No-one has successfully crossed the lake on foot.
"We want to see this beautiful part of the world and show the team that there is more to life than the 9 to 5 routine," her husband Mike, 41, told BBC News Online.
The team will ski by day and camp at night with their tents screwed to the lake with ice-screws in case of high winds.
Two friends from Nottingham, two members of a running club in Southwell and two novices from Bristol will accompany them.
The team aims to raise £10,000 for kidney research and foster care charities.
Fiona was the first British woman - along with British explorer Catharine Hartley - to reach the South Pole on foot in 2000.
She reached the North Pole in 2001 along with her husband and a Canadian guide.
The Nottingham-based recruitment consultant's exploits were recognised during the European Women of Achievement Awards in July 2004.