Your task is to explore this small part of the world in search of Pokemon. Fill your Pokedex and discover where Pikachu is hiding.
It is no longer necessary to collect card info in the cache. The puzzle cache can be solved from info related to what is found on that cache page.
The Oblivia Region is in Chickies Rock Park. Do not take the direct route. Follow trails to within 50 feet. No need to climb down any steep banks.
Good luck, Pokemon trainer.