How is your German?
Deutsche Alpeinverein (German Alpine Club) will cover you for 12 months anywhere in the world* for all Alpine activities including climbing, skiing, kayaking, caving and mountain biking. All for 65 Euros membership. Also comes with other perks if you spend time in the Alps.
(*some limitations on organised expeditions outside Europe)
Only really covers rescue from mountain (Helivac, etc up to 25K Euros) medical costs resulting from any accident, and 2 million third party liability, so not a typical holiday insurance, but I reckon it is worth it if all you want is basic cover for a worst case scenario.