My daughter enjoyed bouldering at the age of 3. Of course, not all walls have many routes for that short a kid but climbing is a challenge she always loved.
Discussion
my daughter would climb anything as a little 'un, literally sides of houses, stone walls, and real boulders. It is a fantastic discipline, and gives much mental strength - as well as grippy fingers, as witnessed by her grip on her purse when it comes time to paying for climbing.
haha 🤣 🥰

