Ostrá

Ostrá (Slovak for sharp) is one of the most striking and best-loved peaks of Slovakia’s Greater Fatra. It stands on the western edge of the central part of the range, in the Bralná Fatra section, about 17 km south of Martin and 3.7 km from the village of Blatnica in Martin District of the Žilina Region. Together with neighbouring Tlstá and Lubená, Ostrá forms a mighty limestone massif that towers over upper Turiec and can be seen from the whole Turiec Basin. It is often called one of the most beautiful mountains of the entire Greater Fatra.

The mountain has two summits separated by the Ostrá saddle (about 1200 m). The western one is a sharp rocky pyramid bristling with walls, towers and even rock windows; maps label it Ostrá and the summit register is kept here. New lidar measurements by the Slovak geodetic office give it 1259 m, while older maps show 1247 m. The eastern, flatter top is called Zadná Ostrá (1263 m) and is the ridge junction linking the massif to the main crest of the Greater Fatra near Smrekov (1441 m).

How to get there / routes

Almost every ascent starts in Blatnica, with a car park at the mouth of the Blatnická valley. A short spur with yellow markings leads from the Ostrá saddle to the rocky summit itself. According to Polish sources (Tatraplan map) the main options are:

• Blatnica – Blatnická dolina – Konský dol – Muráň – Ostrá saddle – Ostrá: 6 km, 762 m of ascent, about 2 h 45 min up and 2 h 30 min down.
• Blatnica – Blatnická dolina – Juriášova dolina – Zadná Ostrá – Ostrá saddle – Ostrá: 6.8 km, 827 m of ascent, about 3 h 10 min up.
• Traverse Ostrá – Zadná Ostrá – Bágľov kopec – Lubená – Tlstá: 4 km, about 1 h 35 min; a handy way to make a loop over both famous peaks above Blatnica.

Tlstá can also be reached from the Gaderská valley, and Ostrá from the Muráň locality. The last metres to the western summit cross rocks, so you need a steady step and proper footwear.

What you can see from the summit

The rocky, almost treeless summit on the edge of the mountains offers an all-round view. To the north and east a large part of the Greater Fatra unfolds with Tlstá (1373 m), Lubená (1414 m) and Chládkové úplazy (1228 m); to the south Drienok (1268 m) and part of the Kremnica Mountains. To the west the Turiec Basin lies at your feet with the Lesser Fatra and the Žiar range above it. In good visibility you can even see the Vtáčnik and Strážov Mountains.

Nature and history

Like neighbouring Tlstá, Ostrá is built of Triassic dolomites with patches of dark-grey Gutenstein limestone. The slopes are steep and cut by small valleys and gullies filled with scree. The lower band of cliffs above the Blatnická valley is called the Sunny Walls (Slnečné steny) and has long been a climbing training ground.

The lower parts of the massif are entirely forested; on the summit only a few clumps of dwarf pine grow. The most exposed spots host rich rock grassland with evergreen sedge, shining pink and other lime-loving plants, and the southern slopes have warmth-loving flora with low sedge and pale fescue.

The whole massif lies in the Tlstá National Nature Reserve (since 1981, over 3066 ha, one of the largest in Slovakia) and in the Veľká Fatra National Park. The reserve has several caves, and Blatnica Castle stands at the mouth of the Blatnická valley.

Safety, season and rules

The reserve has the highest level of protection: walk only on marked trails, do not pick plants and do not light fires. The summit is rocky and exposed – in rain or ice the rock is slippery, and in a thunderstorm it is dangerous up here. The nearest shelter is about 1.3 km away and the springs are lower on the slopes, so carry water. In winter the rocky sections need winter gear and experience. In Slovakia, mountain help comes from the Mountain Rescue Service HZS: 18 300 (+421 18 300) or 112.

Interesting facts

• The name fits perfectly: Ostrá’s sharp rocky profile is unmistakable even from far away.
• The western summit has a narrow rock window, a favourite photo subject.
• The heights of the two summits differ from map to map, so don’t be surprised by 1247, 1259 and 1263 m – all of them belong to Ostrá.

Photos: Alekme, CC BY-SA 4.0; David Paloch (Caroig), CC BY-SA 2.5; Derbeth, CC BY 4.0; Caroig, CC BY-SA 3.0; Jerzy Opioła, CC BY-SA 4.0; David Paloch (Caroig), CC BY-SA 2.5 — Wikimedia Commons.