Grandma's Guinness World Record for climbing 20 feet to the top of a rock-climbing wall at 99

This amazing video shows a plucky grandma making her way to the top of a 20-foot-high rock-climbing wall after trying the sport for the first time - at the age of 99.

Greta Plowman is now in line for a Guinness World Record for being the oldest woman to climb that height of wall.