The instructional trail Terčino Údolí (Theresa's Valley) leads in the nature park of the same name in the neighbourhood of the town Nové Hrady, on the border of the Novohradské Hory (Nové Hrady Mountains).

The trail running through the whole park is dedicated to acquaint visitors with nature and other interests of the park. The main value of the park is in its dendrological variety and a lot of stands with boards are dedicated to interesting trees.

The circular 5 km long path is for pedestrians only. It starts and ends near the central gate of the park in the settlement Údolí below Nové Hrady. Along the trail there are 14 informative boards and some rest-places.
The route is marked by the green sign. The map of the trail can be found on the first board near the central gate.

Interesting places on the trail:
Artificial waterfall on the Stropnice river
Humenická Přehrada dam - just next to the park
Cuknštejn fortress
Lázničky ("Small Spa")