The limestone ridge that carries the zipline split kozjak cables is older than every fortress, road and vineyard beneath it — a Cretaceous seabed lifted vertical by tectonic pressure, its strata still legible as horizontal bands in the cliff face. Mount Kozjak runs roughly 15 kilometres along the northern edge of the Kaštela bay, peaking at Veli Vrh, 780 metres above the sea. Its southern wall drops in near-sheer karst terraces. That geology made it a natural rampart. At its eastern gateway sits Klis Fortress, garrisoned in some form since the Illyrian Dalmatae, expanded under the medieval Croatian dukes, and held by Petar Kružić against Ottoman siege until 1537. The pass below Klis was the only practical corridor from the Dalmatian coast into the Zagora interior; whoever held the ridge held Salona, and later Split. The mountain's slopes tell a quieter history. Drystone walls — suhozid, built without mortar — climb the lower terraces in kilometres of hand-stacked limestone, raised by shepherds and vine growers over centuries of clearing fields by hand. Above them the maquis takes over: holm oak, wild sage, immortelle. The Kozjak ridge sits within a protected landscape designation, and the same thermals that carry griffon vultures and peregrines over the escarpment now carry paragliders launched from the crest. Adventure operators arrived late to this terrain, and deliberately so. The zip lines strung across the southern face were engineered to work with the natural relief rather than against it, anchoring to existing rock outcrops so that a rider crosses the same ravines shepherds once skirted on foot. Below the flight path, the plain unfolds in sequence: the Roman street grid of ancient Salona, the seven Kaštela castles built as Venetian-era defences against Ottoman raids, the Split peninsula, and on clear days the low profiles of Brač, Šolta and Čiovo. What distinguishes the Split zipline experience from the coastal alternative in the Cetina canyon is orientation. Cetina flies you into a gorge, enclosed by walls. Kozjak flies you along an open escarpment, facing outward — the view is the Adriatic basin entire, from Trogir's cathedral tower to the Mosor massif east. Guides on zipline split kozjak tours read that landscape as they harness riders, naming the fortresses and islands in the order they appear. The mountain remains, above all, a vantage point: the same one that decided a thousand years of Dalmatian frontier history.