If you head south, it often gets warmer. But there comes a point where it starts getting cooler again. Of course, if you go south far enough, you end up going north again. The planet being a (near) sphere makes these kind of things happen.
As south as you can get is a place called Antartica. For a while, people didn’t know much about it. In 1911, Robert Falcon Scott led a team to the South Pole, arriving on January 17, 1912. When he got there, he found out that Roald Amundsen had beaten him to the pole. Scott and his men died on the way back, on or about March 29 of that year. His body was discovered on November 12, 1912.
Antarctica is not a nice place.
Don’t tell anyone but Antarctica is where the secret flying saucer bases are hidden.