People on the northern Japanese island of Hokkaido are making the most of the frigid weather by taking part in a fun event on a frozen lake.
The annual winter festival on Lake Shikaribetsu in the town of Shikaoi kicked off Saturday.
Visitors can enjoy various activities in a number of structures made from ice and snow on and around the lake. These structures are collectively called "kotan," which means "village" in the language of the indigenous Ainu people.