If you're thinking of scaling Kilimanjaro's glaciers, you'd better do it soon. They could vanish by 2030.

Thought to be 10,000 years old, researchers said it has lost more than 140 million cubic feet of ice in the past 13 years, according to Pascal Sirguey, a research scientist at the University of Otago in New Zealand.

The loss in volume is approximately 29% since 2000, while the total surface area lost is 32%, Sirguey said.

If Kilimanjaro's northern glaciers continue to shrivel as fast as they did in the past 12 years, the Credner will completely vanish by 2030, Sirguey said.

About 700 million cubic feet of ice remains in the northern glaciers — 71% of it in Drygalski and Great Penck Glaciers.