The Kaprre spring emerges at 1,950 meters above sea level, fed by an underground river system that drains snowmelt from the Accursed Mountains across a catchment spanning forty square kilometers. Local hydrogeologists have traced the flow to sinkholes near the Valbona Pass, eight kilometers northeast, where meltwater vanishes into fractured Triassic limestone and reappears three days later as a circular pool sixteen meters across. The spring maintains a constant temperature of six degrees Celsius year-round, and visibility extends beyond twelve meters in summer months when sediment loads drop. Theth Valley, carved by the Shala River over two million years, remained roadless until 1986, preserving a network of stone towers and blood-feud refuge houses that now anchor the national park's cultural heritage zone. The spring anchors the southern end of a trail network connecting Theth to Valbona through high passes that functioned as smuggling routes during the Hoxha regime. Soviet-era topographic maps classified the entire valley as a border security zone, restricting civilian movement until 1992. Today the same trails serve trekkers moving between guesthouses scattered across eleven kilometers of valley floor. The Kaprre site lies forty minutes uphill from Theth's stone church, following a mule track that switchbacks through beech forest before opening onto alpine meadows grazed by sheep from May through October. Spring flow peaks in early June when snowpack above two thousand meters releases seventy cubic meters per hour into the aquifer. The pool's cyan color results from Rayleigh scattering in exceptionally clear water combined with white limestone substrate reflecting sunlight back through the water column. Dissolved calcium carbonate levels exceed three hundred milligrams per liter, depositing travertine terraces downstream at a rate of two millimeters annually. The site holds no infrastructure beyond a wooden footbridge installed in 2018 to prevent bank erosion. Theth National Park regulations prohibit swimming in the spring itself to protect endemic amphipod species identified in a 2014 survey, though the downstream pools remain open for wading. Morning light strikes the pool directly between seven and ten from April through September, eliminating shadows cast by the surrounding beech canopy.