Telemark turns are led with the heel flat on the outside ski (the downhill ski at the end of the turn), while the inside (uphill) ski is pulled beneath the skier's body with a flexed knee and raised heel.
Telemark turns are led with the heel flat on the outside ski (which becomes the downhill ski at the end of the turn) with the knee at a 90-degree angle. The inside (and uphill) ski slides back under the skier's body with a flexed knee and raised heel.