Original sentence: The Trigrad Gorge (Bulgarian: Триградско ждрело ) is a canyon of vertical marble rocks in the Rhodope Mountains of Bulgaria's very southern parts.The Trigrad Gorge is located 1.2 km from the village of Trigrad at 1,450 above sea level and has a total length of 7 km, of which the real part is 2-3 km
Edited sentence: The Trigrad Gorge (Bulgarian: Триградско ждрело, ) is a canyon of vertical marble rocks in the Rhodope Mountains of Bulgaria's very southern parts.The Trigrad Gorge is located 1.2 km from the village of Trigrad at 1,450 above sea level and has a total length of 7 km, of which the real part is 2–3 km