Where on Earth?? Episode 3

The members wake up to their second day of walking. They set on to make up for the distance they did not cross on their first day. Jong Nam suffers from a mild fever and required ice to cool him down. Around noon, the members rest to avoid the sun and continue walking at 4 p.m. They keep walking under the shadows of canyons until they face their next challenge, crossing a 10 Kilometers area that has no trees for rest or shade at all. They decided to continue walking until the sun goes down to shorten the distance they have to cross tomorrow. They set camp and plan to cross the rest of the plain area before sun rise. (Source: MyDramaList)