The Estérel Mountains are a mountain range located in the southeastern part of France, near the Mediterranean Sea. Known for their striking red volcanic rock formations, the mountains offer stunning views and diverse landscapes, including forests, hills, and coastal scenery. This range is part of the Provence-Alpes-Côte d'Azur region and is popular for outdoor activities such as hiking, biking, and rock climbing. The Estérel is also home to various wildlife and plant species, making it a significant area for nature enthusiasts and conservation efforts.