Fee Glacier, Alpine glacier in Valais, Switzerland

Fee Glacier is a roughly 4.7 km long glacier in the Pennine Alps of Valais, Switzerland, above Saas-Fee. It splits into two parts: the North Fee Glacier, a steep valley glacier, and the South Fee Glacier, a multi-lobed mountain glacier on the north flank of the Allalinhorn. Both feed the Feevispa stream.

During the Little Ice Age peak around the mid-19th century, the Fee Glacier reached down to the basin behind Saas-Fee, enclosing the Gletscheralp between its two ice streams. Systematic length surveys began in 1883; since then the glacier has retreated about 1,100 metres, roughly a quarter of its 19th-century extent. In 1955 a rockfall buried 500 metres of the northern tongue, which the ice overrode and rebuilt over the following three decades before a rapid retreat set in after 1988.

The Fee Glacier feeds the Feevispa, a side stream of the Saaser Vispa that carries its meltwater through the Saastal to the Rhone. Above the glacier, the Mittelallalin station at 3,456 m is reached underground by the Metro Alpin funicular, the third section of the lift chain from Saas-Fee. The ice grotto in the glacier holds 5,500 m³, the largest of its kind.

The glacier is reached from the car-free village of Saas-Fee by two 3-cable aerial ropeways and, in the third section, the underground Metro Alpin funicular to Mittelallalin station at 3456 m. The upper stations give access to the glacial area year-round. Warm, wind- and waterproof clothing and sturdy shoes matter, as temperatures on the ice are far lower than in the valley.

Deep inside the Fee Glacier there is an ice grotto that visitors can enter to see the blue, translucent ice from within. This cave is carved by hand each year, because the glacier moves constantly and the previous year's tunnel shifts and closes over time.