1. Icefall, small regenerated glacier and remarkably large set of terminal moraines (northwest of Steacy Icecap; July 23rd, 2008).

2. Some 95 percent of Antarctica is covered by an icecap averaging 1.6 km (1 mi) in thickness

3. Some 95 percent of Antarctica is covered by an icecap averaging 1.6 km (1 mi) in thickness

4. A heated drill is used to melt holes one and a half miles down into the icecap, a process that takes about 48 hours.