The project of building a high-voltage power line between the towns of Langreo (Asturias) and Velilla del Río Carrión (Palencia) through the Cantabrian Mountains is known as the electrical highway Sama-Velilla. This project aims to build a double circuit of 400 KV power stations connecting Lada and Velilla, which means running for almost 124 miles through a total of 19 municipalities. The project would cross protected areas, the habitats of endangered species such as the brown bear and the Cantabrian capercaillie. Proponents of the project appeal to the need to export the excess energy out of Asturias. For the coming years it seems that various current electricity generation projects will have excess capacity and according to the proponents, the two existing lines are insufficient.