The term easy three-thousander (Leichte Dreitausender) or Hikable three-thousander (Wanderdreitausender) describes mountains above with routes that do not pose any particular challenges. Typical easy three-thousanders, for example, include the Piz Boe () in South Tyrol, which is an hour's walk from the Pordoi Cable Car, or the high Piz Umbrail, accessible from the Umbrail Pass. Amongst the highest easy three-thousanders in the Alps are the Üsser Barrhorn () in the Wallis Alps and the Monte Vioz (, southern Ortler Alps). For ascents of these mountains the main risk is the lack of acclimatisation at these heights. The highest technically accessible three-thousanders in the Alps (and also the highest cable cars in Europe) are the Klein Matterhorn () near Zermatt and the Aiguille du Midi () on Mont Blanc.