Sár Hill, Protected hill and Natura 2000 site in Gyöngyös, Hungary

Sár Hill is a 500-metre andesite hill between Gyöngyös, Mátrafüred and Abasár, rising as a peninsula-like spur of the Central Mátra volcanic block. Its southern slopes are covered with thick Quaternary loess and vineyards, while the flat, plateau-like top holds the 50–55 m wide Szent Anna Lake in a northern depression.

Sár Hill was declared a protected area in 1975, covering 186 hectares, on account of its species-rich wildlife. Its slopes had long been wooded and planted with vines, and the vineyards around them survive today. The hill also holds Natura 2000 designation as a protected area.

The name Sár-hegy ("Mud Hill") refers to the hill itself, whose slopes above Gyöngyös have long been planted with vines; weekend houses and resort plots line the Gyöngyös side. A 7 km nature trail with 12 marked stations presents the flora and fauna, including the Szent Anna Lake, a shallow depression about 50–55 m across that dries out in dry years.

The hill is reached from the 2416 road, which branches off the 3rd main road near Gyöngyös towards Abasár, Verpelét and Eger. A 7 km nature trail with 12 marked stations crosses the protected area. The Szent Anna Lake in a northern depression, about 50–55 m across, can dry out completely in years with little rain.

The flat, plateau-like summit holds Szent Anna Lake, a basin about 50–55 m across in a northern slope depression. In dry years its open water disappears entirely, yet the spot remains habitat for rare plants and butterflies. The Külső-Mérges Creek rises at the hill's northeastern foot.