Park-šuma Golubinjak, Forest reserve in Primorje-Gorski Kotar County, Croatia.

Park-šuma Golubinjak is a 51-hectare protected forest at 730–800 m elevation, 1 km from Lokave in Gorski Kotar. Beech, fir and spruce grow on karst terrain crossed by 10.82 km of footpaths. The reserve holds two caves, Ledena and Golubinja, and the rock opening called Paklena vrata, 4 m wide with walls up to 5 m thick and 8 m high.

Golubinjak was already mentioned as an excursion site in the late 19th century. In 1954 it was declared a protected area under the category of park-forest, covering 51 hectares on karst between 730 and 800 metres above sea level, one kilometre from the centre of Lokve beside the Rijeka–Zagreb motorway.

The giant fir called "Kraljica šume" (Queen of the Forest) is the park's best-known tree: over 250 years old, more than 35 m tall and 140 cm in diameter. Golubinjak was already mentioned as an excursion site at the end of the 19th century, and a restaurant and children's playground stand at the entrance.

The reserve is well-organized with marked trails leading to its main attractions and caves. Sturdy footwear is recommended as paths traverse forest terrain and uneven ground.

The Ledena cave, whose name means "Ice Cave", keeps snow and ice through the summer, so the air inside stays cold while the beech, fir and spruce forest outside is warm. The park also holds the Golubinja cave, and both lie beside marked trails on the karst above Lokve.