This technical paper summarizes the recent experimental results concerning the challenging problem of landing and take-off on/from a sloped surface with an aerial vehicle exploiting the force provided by an anchored taut tether. A special regard is given to the practical aspects concern- ing the experimental part. In this manuscript we show extreme landing and take-off maneuvers on slopes with at least 50◦ inclination and non flat surfaces, such as, e.g., on industrial pipes.