Indoor skiing is done in a climate-controlled environment with artificially produced snow. This enables skiing and snowboarding to take place regardless of outdoor temperatures. Facilities for both alpine skiing and nordic skiing are available.

Snowmaking is the production of snow by forcing water and pressurized air through a "snow gun", also known as a "snow cannon". Snowmaking is mainly used at ski resorts to supplement natural snow. This allows ski resorts to improve the reliability of their snow cover and to extend their ski seasons from late autumn to early spring. Indoor ski slopes use snowmaking. They can generally do so year-round as they have climate-controlled environments.