National Geographic : 1937 Apr
Photograph by Prince Ulrich Ferdinand Kinsky "RUN!" IS THE COMMAND, AS LAUNCHING CREWS HEAVE AT THE RUBBER ROPE WHICHWILL SNAP THE GLIDER ALOFT A second group of boys, at the left, pulls at the other end of the double line. When the elastic is stretched taut,the plane's tail isreleased and the motorless craft shoots into the air. The rope is hooked on in such a way that it falls free after the take-off. Ascending on upwardcurrents of air,the glider may soar for hours asthe pilot guides it with rudder and ailerons. Young Austrians learn the thrilling sport at a glider school here on the summit ofthe Gais Berg, near Salzburg.