Wizard of Ooze: When a "bonus" puzzle cache like this is published, it's a requirement in our guidelines that all of the elements leading up to the bonus be active so that the bonus can be found. As several of the caches required to solve the final have been archived, this puzzle cache final cannot be found without someone being told of its location. Unfortunately, this final cache in the series will need to be archived as well, as it is no longer able to be solved "from the information provided on the cache page".
Wizard of Ooze, volunteer reviewer