In the mountainous areas of León, a pressing issue is affecting local communities. The phrase "el monte nos come" is often heard, describing the physical impact of matorral advancing over pastures. These pastures have historically provided resources and sustenance to families in the region.

The areas surrounding the biosphere reserves of Omaña and Luna and Alto Bernesga are particularly affected. Further details on this issue can be found in the original source, which discusses the challenges faced by the region, including the impact of the matorral on the local way of life.