Nape piercing
Somewhat less common are surface anchors, commonly made from surgical implant-grade titanium. A surface anchor has two parts: a base or foot which is inserted under the dermis during the piercing process and which incorporates a stem exposed to the surface, and a decorative disc or ball of jewelry which typically appears flush with the surface of the skin. Surface anchor nape piercings are most commonly found placed symmetrically on either side of the spine at the nape.
Traditional climbing
When a climber has reached the top of a climb an anchor must be set up to allow the leader to bring up the seconder safely. An anchor has a number of different components which should be put together in a redundant way to make the anchors safe.In some cases a traditional climb may be too difficult or there might not be enough time to complete the climb before dark. The lead climber may decide to abort the climb (or "bail") and descend to the ground before reaching the top. To do this an anchor is set up mid-climb and whatever protection that is required to ensure a safe descent is left on the rock after the climbers abseil to the ground.A number of types of rock are climbed on each with a varying degree of suitability for traditional climbing. Some examples are sandstone, granite and limestone.