The Na Pomezí Cave NNM lies on a forested slope on the left hand side of the road from Lipová–Lázně to Vápenná in the Jeseníky Mountains and the north of the Olomoucký kraj – Olomouc Region. The protected area covers an area of 11.74ha and lies at elevations of 520-590 metres above sea level.
The national nature monument protects a karst area with well-developed surface and sub-surface karst phenomena, which can be seen on a relatively small surface area include karren, dolines, dry sinkholes and active sinkholes and a spring resurgence. However, the most spectacular karst phenomena such as stalactites, stalagmites and crust formations can be found underground in the show cave, which is the largest cave system in the Czech Republic which originated by the dissolution of marble.
Most of the territory is covered with non-native spruce forest, with only the rocky eastern section covered with beechwoods, accompanied by sycamore (Acer pseudoplatanus), ash (Fraxinus excelsior) and Norway spruce (Picea abies). The small remnant of calciphilous beechwood with limestone rocky outcrops and the nearby species-rich spring meadow where orchids can be found are of greater botanical interest. This meadow was added to the monument when it was expanded in 2008 and the rare or endangered plant species growing here include green spleenwort (Asplenium viride), moonwort (Botrychium lunare), broad-leaved marsh orchid (Dactylorhiza majalis) and early purple orchid (Orchis mascula).
The cave is an important hibernation site for bats such as the lesser horseshoe bat (Rhinolophus hipposideros) and greater mouse-eared bat (Myotis myotis). A total of 11 hibernating bat species have been recorded here. A characteristic community of butterflies has been recorded on the wet meadow, including the lesser marbled fritillary (Brenthis ino) and the purple-edged copper (Lycaena hippothoe).
At present the management plan is being implemented and the tree stands are gradually being renewed with the aim of modifying the species composition in favour of native trees such as beech, fir, sycamore, ash and other deciduous trees.