Martina Navratilova has swapped tennis shoes for walking boots
as she seeks to raise funds for sporting charity the Laureus Sport for Good Foundation by climbing Kilimanjaro.
The nine-times winner of Wimbledon is taking on the highest mountain in Africa just months after receiving treatment for cancer and is blogging along the way.
Reporting a blizzard as the team pitched camp near the Mawenzi Tarn, she revealed better winter jackets
may be needed as the weather is unusually harsh at present.
She stated: "We have sent a message down to our base camp to bring up thicker gloves, hand warmers and more heavy clothing."
Despite its equatorial location, Kilimajaro is covered by glaciers towards its 19,340 ft summit, though these are shrinking gradually.
Recent charity climbs by celebrities included the 2009 ascent for Comic Relief by a British group led by musician Gary Barlow, which used the Lemosho route across the Shira Plateau to ascend the mountain.