Los Arenales

460+ routes; 30-750m; bouldering to aid

Multi-pitch trad on varicolored granite; testpieces per Elorza guidebook. Confirm.

Huge line inventory; single-pitch sport plus 750m walls; teams spread across spires and grades

Moderate; valley/taxi access then short walk; fit for trad-capable groups; some sport for mixed teams

Red/varicolored granite; high quality; clean cracks

Vertical granite; splitter cracks, slabs, faces; big multi-pitch exposure; some sport

Spires multiple aspects; sun/shade by wall; alpine sun strong. Confirm.

Low crowds; abundant unclimbed potential; quiet valley. Confirm.

Dry high-Andes summer; afternoon storms possible; snowmelt lagoon in summer. Confirm.

Dec-Mar

Glacial lagoon summer only; stable high-country windows. Confirm.

Short from road; refugio ~20min walk; sectors up-valley past Refugio Portinari

~135km SW of Mendoza; bus Mendoza-Tunuyan; taxi ~19km up valley; own/4x4 helpful. Confirm.

Full trad rack, doubles for splitters, alpine draws, helmet; sport draws select; minimal signal

Free camping; free unmanned Refugio Cajon de los Arenales; Refugio Portinari; Tunuyan lodging. Confirm.

Minimal; unmanned refugio; bring all supplies; services in Tunuyan/Los Arboles. Confirm.

Mixed trad/sport; some bolted lines/anchors; verify fixed gear. Confirm.

Altitude; storms; rockfall; route-finding on big walls; cold

Self-sufficient trad; AAGM guides for courses/multi-pitch

Remote high valley; self-rescue; nearest help Tunuyan. Confirm.