Ressl, Mountain summit in northern Czech Republic.

Rössel is a mountain summit in northern Czech Republic with open viewpoints and hiking trails that wind through forests and rock formations. The terrain offers routes of varying difficulty to reach the peak.

Ressl first appears in 1290, when Albert of Žeberk donated the settlement on the hill and its vineyards to the Cistercian monastery at Osek. In 1425 the local farm paid wine tithes to Most Castle, and by 1455 the hill was being reforested after wood was cut for the castle garrison. The village vanished, leaving only a sheep farm, and vines grew on the southeast slopes until the 17th century.

The hill's name comes from a village recorded in 1290, when Albert of Žeberk donated it with its vineyards to the Cistercian monastery at Osek. Wine was grown on the southeastern slopes until the 17th century, and the vanished village left only a sheep farm. A 3 km educational trail with 13 information panels, opened in 2007 by the Most town hall and the Most regional museum, crosses the hill.

Marked trails of varying difficulty lead to the summit, with parking available at the base of the mountain. Information signs along the routes help with navigation and explain the geological features of the area.

The hill is the westernmost summit of the České středohoří and the highest of the hills ringing Most, at 414 m. Its phonolite intruded conglomerates of ancient volcanic fan channels, and the rock is noted for very low nickel and chromium but high zircon and niobium.