We park at the small parking lot or in the bay just beside the road.
From the parking area south-east we walk into the the steep forest, getting up the often bumpy descent path. In poor snow conditions, we already mount our crampons on the splitboards / ski touring ski at the parking lot. We walk up and then the forest thins out. We reach the small plateau of the Obere Issalm, easy to recognize also because of the frozen mill, which we will pass in the next 20 minutes. Caused by the snow conditions, we decide whether hiking up at the left or the right side of the Wörgetal.
left (direct): We walk slowly in respectful distance to the western faces of Schafzoll, Vordere- und Hintere Karlesspitze to the Untere- und Obere Böden. Here we cross the variant right track.
right: In the clearing, we first follow the summer trail and soon cross the creek. Than we hike up the escarpment to the right of a broad, quite steep northeast slope. Than plane further southeast in the Obere Böden. Now the uphill tracks will seperate, we turn left, south-east and walk up to the Knappen Rücken. Near the short but steep ridge, we deposit our splitboards or skitouring skis and make the last 20 meters by feet, reaching the top of Hintere Karlesspitze at 2641m.
As ascent through magnificent splitboard, backcountry area, there are steeper and planer runs we can choose. Of course we have the danger of avalanches in our minds and adjust to the situation.