Colombia's Nevado Santa Isabel glacier retreats to rock at 4,900m

New measurements of Nevado Santa Isabel in Colombia show its glacier has retreated so far that the peak at 4,900 meters is now exposed rock, signaling the mountain's imminent loss of glacial ice. The report confirms an accelerating trend of tropical Andean glacier disappearance, with implications for regional water supply and climate-change monitoring. The exact timeline of complete ice loss remains uncertain.