The Hintertux Glacier () is the tourist name for the glaciers of the Gefrorene-Wand-Kees, also called the Tuxer Ferner, and the nearby Riepenkees at the top of the Tuxertal, a side valley of the Zillertal in the Austrian state of Tyrol. Both glaciers are accessed by gondola and chair lifts and is one of only two ski resorts in the world offering skiing 365 days a year (the other being Zermatt in Switzerland). At its highest point the ski region reaches a height of in the saddle between the peaks of the Gefrorene-Wand-Spitzen. Hintertux glacier is one of the most popular glaciers in Austria. It is open all year round with skiing in the winter, and hiking activities in the summer.