DARYN KAGAN, CNN ANCHOR: Giving you an update now on the two women who are making their way across Antarctica, an update on the progress of Ann Bancroft and Liv Arnesen. They called in, as regular, yesterday afternoon, and here's a listen-in on that conversation.</s>ANN BANCROFT, ANTARCTIC EXPLORER: We've had a couple days of very aggressive sailing, fast sailing, and we're inching our way. We're probably about 100 hundred miles from the top of the Shackleton Glacier, but we're having little reminisces of those days before the poles. The push is on.</s>KAGAN: I can hear a lot of wind in the background. Is that a good thing?</s>BANCROFT: It's a good thing. This wind is a little strong, so we've made camp tonight, and we'll pick it up probably at 4:00 in the morning our time, if it's still holding like this, and we'll keep going.</s>KAGAN: I have a procedural question for you: When you get up in the morning and you start to go, how do you know where you're supposed to go? How do you know what is straight ahead? How do you map your course?</s>BANCROFT: That is a great question. You know, usually our sled tracks are dusted away by the wind, and so without them, we would have had no idea where we are going. So we pull out the compass every day. The sun is up for 24 hours and it circles around, so it's not much help typically in finding our direction initially, but it does aide us in our navigation. But we use the campus during the day and then the global positioning system at night.
Antarctic Explorers Leave Shackleton Glacier