The Chartreuse Mountains are a mountain range located in southeastern France, primarily within the Isère department. They are known for their stunning limestone cliffs, deep valleys, and rich biodiversity. The range is part of the larger Alps and features numerous hiking trails, making it a popular destination for outdoor enthusiasts. The mountains are also home to the famous Chartreuse monastery, founded by the Carthusian monks in the 11th century. This area is renowned for its unique herbal liqueur, Chartreuse, which is produced by the monks using a secret recipe of 130 herbs. The combination of natural beauty and cultural heritage makes the Chartreuse Mountains a significant location.