Hochweißstein / Monte Peralba impresses by it sheer size, a huge, almost cubic block of stone with a large, sloped summit plateau. There is no easy route to the summit, a ferrata and two UIAA I routes are the least difficult ones. Still, on a fine day you will always find a crowd of people up there, thanks to two mountain huts, which are located in the direct vicinity of the mountain. In the north, still on Austrian ground there is Hochweißsteinhaus, in the south-east you will find Rifugio Calvi. From either of the huts the ascent of Hochweißstein / Peralba can be completed in about 2 1/2 hrs (one direction).
Ascent from Austria
Use waypoint Frohnalm as your routing destination to reach the nearest parking area. Frohnalm can be reached from St. Lorenzen in Lesachtal Valley. The side road is well kept only for the first 5 km. The remainder is pretty tough on cars with low ground clearance (deep rain gutters).
Even if it's not necessary, I recommend an overnight stay at Hochweißsteinhaus (nice crew, good food and accomodation).
GPX and tour description at bergfex.at
Ascent from Italy
Use waypoint Sesis as your routing destination to reach the nearest parking area. GPX and tour description (English) at alltrails.com
The Cache
The small sized box is hidden in a stone wall (with a comfy "stone seat" on its western side). There is mobile phone coverage on the top, but to be on the save side, don't forget to save the spoiler pic on your phone - you probably won't find the cache without it, as there are several stone walls (and it's quite a mess around ;-)