The BisMan area needs more challenge caches, so I thought I'd provide some!
This cache is at the posted coordinates and you may sign the log at any time, however you may only log this cache as a find if you have filled at least 300 days of your found date calendar and you have found the final container and signed the log. Events and lab caches do qualify for this challenge. This find cannot be used as the only find for the day you log it. There is no need to provide proof of qualification as I can simply look at your found date calendar, however a link to a challenge checker has been included per Geocaching.com guidelines. The final is a park and grab. BYOP. Happy Hunting!