Pavlino údolí, Nature reserve in Jetřichovice, Czech Republic.

Pavlínino údolí is a canyon-like valley of the Chřibská Kamenice river between Jetřichovice, Rynartice and Studený, about 3.5 km long and up to 70 m deep. The 1993 nature reserve covers 183 ha on sandstone of the Děčínská vrchovina, with alder and maple by the water and spruce on the rocks.

The area was declared a nature reserve in 1993 to protect the canyon of the Chřibská Kamenice and its rock formations. In 2010, floods swept away three footbridges on the marked trails; new walkways were installed by October, restoring access through the valley.

The name Pavlínino údolí refers to Pavlína, though the sources do not record who she was; the valley is also called Pavlino údolí. The Chřibská Kamenice flows through it past the Greislov mill and the Pavlínka reservoir, and the red and green marked trails from Jetřichovice meet near the mill.

Access is available through marked red hiking trails connecting Jetřichovice and Studený villages. The best time to explore is spring and autumn when trails are dry and the landscape is most visible.

The chamois seen on the valley slopes descend from animals released near the Lužické hory at the start of the 20th century; the Chřibská Kamenice also holds a protected fish area. The reserve is the largest in the Labské pískovce protected landscape area.