Underground Lake of St-Léonard & Valais Discovery Day Trip from Crans-Montana

Experience the best of nature and culture on this full-day private excursion from Crans-Montana to the heart of the Valais region. This excursion is perfect for those seeking a mix of relaxation and discovery, this tour offers a memorable journey through some of the area’s most unique sights.

Start your day with a comfortable private transfer from your hotel in Crans-Montana to Lac Souterrain de St-Léonard, a hidden gem located between Sion and Sierre. Discovered in 1943 and open since 1949, this 300-meter-long underground lake lies beneath the Valais vineyards, 30 to 70 meters below ground. It’s the largest natural underground lake in Europe. Here, enjoy a serene guided boat tour through its peaceful waters, surrounded by natural rock formations. During a 30-minute guided tour, you’ll glide over the lake’s clear waters and learn about its mysteries.

Next, continue the transfer to Sion, the capital of Valais, for a relaxing lunch at a local restaurant or vineyard terrace, where you’ll enjoy authentic regional dishes and stunning Alpine views.

After lunch, you may choose to join an optional wine tasting at a local winery or visit a traditional Valais farm to discover local products and regional flavors (based on availability).

Depending on timing and preferences, take a short self-guided walk through Sion’s Old Town, or visit Valère Basilica and Tourbillon Castle for incredible views over the Rhône Valley.

The day ends with a scenic return transfer to your accommodation in Crans-Montana, leaving you with unforgettable memories of this special trip of Switzerland.