The waterfall is supplied by an underground karst spring that originates high in the Kanin mountain range.
During peak meltwater in spring or heavy autumn rains, the water flow can reach up to 100 cubic meters per second.
The waterfall is part of the Triglav National Park region's periphery.
The base of the waterfall is situated at an elevation of approximately 440 meters above sea level.
Boka is classified as a 'hanging valley' waterfall because its stream drops from a cliff high above the main valley floor.
Boka Waterfall is Slovenia's most voluminous waterfall, featuring a total height of 144 meters. The waterfall consists of two distinct stages: an upper drop of 106 meters and a lower drop of 33 meters. It is fed by a karst spring emerging directly from a vertical rock wall. The water volume fluctuates significantly based on snowmelt and seasonal rainfall. The site is located in the Soča Valley, carved by the Boka stream. The waterfall is visible from the main Bovec-Kobarid road. A steep hiking trail leads from the bridge to a viewing point overlooking the cascade. The rock face around the waterfall is composed of limestone susceptible to karst erosion.
The viewing platform located on the steep trail provides a clear frontal perspective of both stages.
Wear sturdy, grippy hiking boots as the trail involves loose scree and steep, slippery limestone sections.
Bring trekking poles to assist with the steep incline and descent on the path leading to the viewpoint.
Carry sufficient water, as there are no facilities or water stations along the hiking path.
Do not attempt to scramble off-trail toward the base of the falls, as the terrain is unstable and prone to rockfall.
The trail can become hazardous and is not recommended during or immediately after heavy rainfall or winter icing.
Stay on marked trails to prevent erosion and avoid disturbing the local karst ecosystem.
