The first section is the reverse of your day 1 to Konkordia, over the Grunhornlucke at 3278m. The ski the far side will be tricky as it will be frozen, but the advantage being that from Konkordia downwards you can glide effortlessly down the Aletsch Glacier, trending to the glacial R bank, steepening up as you get down to about 2100m to put you skins on. This last section down the Aletsch Glacier may involve some weaving through seracs and crevasses, but there is often a track in. Skin up the long valley floor initially, then up onto the glacier more steeply, taking a blunt snowy nose to the L in ascent of a small icefall, before traversing back R on flat glacier, then rising gently to the cosy Mittelaletsch Bivouac Hut at 3013m. There are places for 18 including mattresses and blankets. It is reasonably well insulated, but no stove or fire. There is an honesty box for the 15CHF hut fee (10 for CAS/Reciprocal Rights card holders), prices in May 2018.