Okno Ohniste (Fireplace Window) is the largest arch in Slovakia
at about 66 ft high. The lower half of the opening is obscured in this photo.
The arch is in a limestone cliff west of the summit called Ohniste in the
Low Tartra mountains. The arch is at an altitude of about 5000 feet above
sea level and the trail to it rises about 2700 feet. The hike to the arch
took about 3 hours and 2.5 hours back. Photo by Ray Millar. Although there
are trails to the arch, Ray recommends a guide
for this trip.