The Harzer Wandernadel is a system of hiking awards in the Harz mountains in central Germany. The hiker (or mountain biker) can earn awards at different levels of challenge by walking to the various checkpoints in the network and stamping his or her passbook to record the visit. With 222 checkpoints in three federal states and across five districts in the Harz and with membership in five figures, the system has gained a following Germany-wide.