he village of Zermatt lies at the southern end of the Matter Valley (German: Mattertal), which is one of the lateral branches of the great Valley of the Rhone. The village is almost completely surrounded by the high mountains of the Pennine Alps among which Monte Rosa (or Dufourspitze), Switzerland's highest peak at 4,634 metres (15,203 ft) above sea level. It is followed by the Dom (4,545 m [14,911 ft]), Lyskamm (4,527 m [14,852 ft]), Weisshorn (4,505 m [14,780 ft]) and the Matterhorn (4,478 m [14,692 ft]). Most of the Alpine four-thousanders are located around Zermatt or in the neighbouring valleys.