Louwihorn 3773m and Jungfrau 4158m from the Konkordiahütte

After a short descent to the lowest point of the Konkordiaplatz, skins are put back on. The plateau is crossed on flat terrain. The mouth of the Aletschfirn is ascended westwards, keeping rather to the right. Around crevasses, a broad ridge is reached, which is followed in a wide right curve to the mouth of the Kranzbergfirn. In the wide basin west of the ridge, ascending under the glacier crevasses, the route is crossed to the northeast. The crevasses are overcome on the right over the steep west slopes of the Kranzberg. Now we ascend in gentle steps several small glacier basins first on the right, later in the middle, up to the saddle between Gletscherhorn and Kranzberg. From here we see the firn crest of the Louwihorn below the Rottalhorn. Quite flat and broad, the Louwitor is soon reached. A moderately steep firn slope leads to the summit ridge, over which the Louwihorn is easily climbed.

Descent along the ascent route down to the Louwitor, then steeply northwards over a broad glacier slope to the Jungfraufirn down to the ascent track from the Jungfraujoch. Skins on.

From the glacier basin between Louwihorn and Rottalsporn, we ascend almost flat in a right curve westwards. At the first very steep south slope, the marginal crevasse is crossed at a suitable spot and the firn slope of the Rottalsporn is reached in a few switchbacks. With a pleasant gradient, the broad ramp is ascended up to below the Rottalhorn and then crossed northwestwards beneath it to below the Rottalsattel. A ski depot is usually set up under the marginal crevasse. Equipped with crampons and ice axe, the marginal crevasse is overcome somewhat precariously and the last steep meters are tramped up to the Rottalsattel. Moderately steep and narrow northwards along the saddle, then one crosses quite exposed, mildly ascending to the left rock edge of the very steep south ridge ("Menschenfresser" - accident prone!!, a safety pole in the firn crossing). On the right of the rocks, the firn is ascended very steeply, soon the ridge levels off a bit and steadily becomes easier, reaching the somewhat flatter summit slope. This is traversed up to the rocky summit structure, then ascending to the left over mixed terrain to the ridge edge. Over the short southwest ridge, the summit of the Jungfrau is reached in a few steps.

Descent along the ascent route, descent from the Rottalsattel either over the Rottalsporn along the ascent route or, in very good conditions, very steeply down through the glacier crevasses between Rottalhorn and Jungfrau to the skin-on spot. Now a counter-ascent of about 200 meters to the Sphinx tunnel (train) or 400 meters to the Mönchsjoch hut must be accepted (unless descending to the Konkordiahütte via the Jungfraufirn).