Come on junior, it's bathtime !

Japanese macaques take an open-air hot-spring bath, or onsen at the Jigokudani (Hell's Valley) Monkey Park in the town of Yamanouchi, Nagano Prefecture.

The macaques, commonly known as snow monkeys, are oblivious to the cold as they play.

Tourists watch as the cheeky monkeys enjoy a dip and seem to enjoy the attention.

PHOTOS: AGENCE FRANCE-PRESSE