The Aneto Glacier is located in the Pyrenees mountain range, specifically in the province of Huesca, Spain. It is the largest glacier in the Pyrenees, covering an area of approximately 1.5 square kilometers. The glacier sits at an elevation of around 3,400 meters and is a popular destination for hikers and mountaineers. The Aneto Glacier feeds into the Río de Aneto, contributing to the region's hydrology. It is a remnant of the last Ice Age and has been shrinking due to climate change. The glacier is an important site for scientific research, helping to study the effects of global warming on glacial environments.