Stol, Mountain summit in Julian Alps, Slovenia

Stol, also called Stu by locals, is a narrow, elongated mountain rising to 1673 metres in the Breginjski kot, on the boundary between the Julian Alps and the pre-Alpine terrain. Two forest roads reach its ridge, one from the abandoned Učja border crossing and one from the village of Sedlo. The ridge is used for paragliding and long cross-country flights.

Stol lies in the Breginjski kot on the Slovenian side of the Julian Alps, not on the Italian border. In the First World War it was one of the sectors of the Battle of Caporetto: on 25 October 1917 Austro-Hungarian units of the 22nd Schützen Division took the mountain. The old international crossing at Učja, now abandoned, sits below its ridge.

Locals call the mountain "Stu". Its ridge is used for paragliding and long cross-country flights, and as the highest launch site in the Soča valley it often stands above the inversion layer, allowing thermal soaring.

Several marked hiking routes lead to the summit, with the shortest trail from Breginj requiring around three hours of uphill walking. The mountain is accessible year-round, but winter alpine conditions demand caution and preparation.

Stol's ridge is the highest paragliding launch site in the Soča (Posočje) region, and because it often rises above the temperature inversion layer, it allows thermal flying when lower slopes are in shade. Two forest roads reach the ridge, one from the abandoned Učja border crossing and one from the village of Sedlo.