How to delete a Geocaching account?
The description of the service:
Geocaching is an outdoor recreational activity, in which participants use a GPS receiver or mobile device and other navigational techniques to hide and seek containers, called "geocaches" or "caches", at specific locations marked by coordinates all over the world.
Each member ID on Geocaching.com is a historical record in their system and cannot be deleted. Therefore, your account can only be disabled, not be deleted.