Skyhold is a fortress in the Frostback Mountains and serves as the headquarters for the restored Inquisition.
Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement that hardens over time. Most concretes used are lime-based concretes such as Portland cement concrete or concretes made with other hydraulic cements, such as ciment fondu.
Cement is the binding element in both concrete and mortar and is made most commonly of limestone, clay, shells, silica sand and other materials. These materials are crushed and then combined with other ingredients (including iron ore), and then heated to about 2,700 Fahrenheit.