Ecopath kaleto

The Kaleto Eco-Trail is a pleasant, shaded, and well-equipped nature trail located in the northwestern outskirts of the town of Obzor, Nessebar Municipality, Burgas Region, on the Central Bulgarian Black Sea coast — connecting the edge of the town with the ruins of the medieval fortress of Koziak, known locally as "Kaleto." With a total length of approximately 2,200–2,275 metres and a maximum elevation gain of about 100 metres, it is one of the most easily accessible mountain-and-sea combination experiences on the entire Bulgarian Black Sea coast. The trail passes through dense, cool, mixed forest of broad-leaved and coniferous trees — predominantly pine — whose fragrant air provides a refreshing contrast to the summer heat of the seaside resort.The route can be divided into two distinct sections. The first section covers the 700 metres from the trailhead to the Purvomayska Polyana (First of May Glade) — a flat, wide, well-maintained path with a gentle 50-metre elevation gain, entirely suitable for families with small children; along the way, the route passes through the Ayazmoto rest area, where a mineral spring with healing water has been known and used since Roman times and was the site of a traditional St. Constantine and Elena Day offering on 21 May; tables, benches, a fireplace, and children's swings are provided. At the Purvomayska Polyana itself — at 65 metres above sea level, covering about 2 decares — a second mineral spring with a kaменна мечка (stone bear) guardian greets visitors, and from here the trail branches off to a small rocky waterfall approximately 10 metres high, whose spray forms a rainbow of water droplets in sunshine and is described as the most memorable feature of the trail. Continuing from the glade, the second section climbs steeply to the hilltop through more demanding terrain, with wooden bridges, additional rest benches, solar-powered pathway lights, and the mythological Samodiva Spring (the Spring of the Forest Nymph) — named for the legend of Kalina, a girl from the medieval fortress who turned into a forest nymph whose tears formed the spring. The trail ends at the sparse but historically significant remains of the medieval fortress of Koziak — a small feudal castle of the 12th–13th century, discovered by brothers Karel and Herman Škorpil, whose port below was known to mariners as a trading centre. From the hilltop, panoramic views of Obzor and the sea horizon open up through gaps in the tree canopy.