Run by Pedro Luis, raised in a family of guides, with Julio Choque — IFMGA-certified — leading the guiding. They make a point that is worth repeating: they are one of the few agencies in Bolivia using exclusively certified mountain guides, and several of theirs are on the national rescue team. In a country where a Huayna Potosí "guide" can be somebody with a rope and a good attitude, that is the distinction that matters.
The list runs the Cordillera Real — Pequeño Alpamayo, Condoriri and its left wing, Chachacomani, Chearoco, Illimani, Illampu, Ancohuma — and the western volcanoes, Sajama, Parinacota, Pomerape, Acotango. They publish a full 2026 trip schedule with fixed dates, and a page on acclimatisation and one on insurance, which tells you they have had the conversation before.
The office is at 120 Pasaje Juan XXIII in El Rosario, a few streets below Sagárnaga. They answer WhatsApp, Telegram and Signal on the same number, round the clock.