Cambios

- GPT05 Option 1 (Lago Teno): This option is clearly more scenic when compared with the regular route.

- It is unclear how tolerant Argentine border police treats hikers that sneak through Argentine territory east of vulcano Planchon-Peteroa. There is a special arrangement between Chile and Argentina that permits the Chilean arrieros of Valle Grande to cross at Paso Vergara by car from Chile to Argentina and drive 15 or 20 km though Argentina before re-entering Chile at an informal border crossing just north of Valle Grande. But I'm unsure if this applies also to "lost hikers". Anyway, in case of an emergency crossing into Argentina from Valle Grande is probably an option. In this case "lost hikers" are probably returned via Paso Vergara to Chile. Also, climbers from Chile and Argentina get from both sides of the border up to the summit of Volcano Planchon and there seams little dispute over this. Trails crossing the border are clearly visible on satellite images.