What kind of piste should https://www.openstreetmap.org/way/1222203464 be ? You did not add any details, if it is cross-country skiing or downhill. highway=piste does not mean much. Also it is there is no piste to be seen on Ortofotomozaika (but that one is older than your visit, so maybe they built a piste there now, but it needs more details added.