RP Wasserkuppe, probably early 1970s
private collection, Walter Elkins)
Radar site is clearly visible looming over the very popular Segelfliegerschule and Hotel in this German post card from the early 1970s. The 'Kuppe has been a favorite among German gliders (moterless flight) from even before WW I. Check out the 601st AC&WS web site for some great details on Wasserkuppe history.