Ilamatepec last erupted on 1 October 2005, throwing mud and boulders across the coffee fincas on its southern flank and killing two people. Twenty-one years on, the same slope carries thousands of walkers a year toward a turquoise crater lake that sits at roughly 2,381 metres — the highest summit in El Salvador. The Pipil name Ilamatepec translates loosely as "old woman's mountain," and the volcano has been watched, mapped and feared for centuries. Spanish chroniclers recorded ash falls in the 1570s. Later eruptions in 1904 and 1920 reshaped the crater rim. The Cerro Verde plateau below was planted with cypress and pine in the 1950s as part of a national forestry project, and the whole massif — Santa Ana, Izalco and the extinct Cerro Verde cone — was folded into a protected national park. That plateau is where every santa ana volcano hike from el tunco begins, at a trailhead reached through the park gate at Cerro Verde National Park, Santa Ana, El Salvador. What draws visitors now is geological rather than ceremonial. The summit crater holds an acidic lake whose colour shifts from jade to milky green depending on sulphur content and light. Fumaroles vent along the inner wall. On clear mornings the view takes in Izalco's black cone, Lake Coatepeque filling a collapsed caldera to the east, and, on the finest days, the Pacific line near La Libertad. Cloud usually closes over the rim by early afternoon, which is why the recommended arrival window runs 08:00–10:00. The trail itself is a working piece of park infrastructure. Rangers accompany groups; the conservation fee is 6 USD per foreign adult; the park operates 08:00–16:00 daily. Roughly eight kilometres round trip, the path climbs through cloud forest, then coffee-scrub, then bare volcanic gravel where nothing grows and the wind carries a faint sulphur smell. El Tunco, ninety minutes south on the Pacific coast, has become the practical base for this ascent. Surf-town hostels sit at sea level; the summit sits nearly 2.4 kilometres above it. Operators bridge that gap with early transfers, and most santa ana volcano hike from el tunco tours pair the climb with a swim in Lake Coatepeque afterwards. Demand for santa ana volcano hike from el tunco tickets now rivals that for the country's colonial towns — a shift that says something about how El Salvador is being travelled in 2026.