The Santa Ana volcano — known locally as Ilamatepec — is the highest peak in El Salvador. The trail starts at Cerro Verde National Park and climbs through cloud forest, then loose volcanic ash to the rim of the active crater. The summit holds a turquoise sulphur lake; on a clear morning you see the Pacific in one direction and Lago de Coatepeque in the other.
The hike is moderate-strenuous: roughly 4–5 hours round-trip with about 600 metres of elevation gain. Real trail shoes are required — the upper ash is slippery in regular sneakers. Most groups depart Caluco around 5:00 AM to be on the rim before the cloud layer rolls in, which usually happens between 10 and 11 AM.
Park guides are mandatory beyond a checkpoint and travel in groups for safety; armed park police accompany every summit party. Lylli arranges the pre-dawn driver from Caluco, the park guide and entry, and the return — one phone call, one transaction.