The Armorican Massif is a geological region located in northwestern France, primarily in the Brittany and Pays de la Loire regions. It is characterized by rugged terrain, ancient rocks, and a variety of landscapes, including hills and valleys. The massif is part of the larger Brittany Peninsula and is known for its rich geological history, dating back to the Precambrian era. This region is also significant for its biodiversity and unique ecosystems. The Armorican Massif is home to various plant and animal species, some of which are endemic to the area. Additionally, it features several natural parks and protected areas, making it an important site for conservation and outdoor activities.