The Bulblax Kingdom is most likely the third cave Olimar and Louie/The President enter in the Awakening Wood in Pikmin 2. It is considered one of the harder caves in the Awakening Wood. To get to the cave's entrance, which is noticeably high up, Olimar and Louie/the president can either drain the lake and destroy the white wooden wall near your landing site, or go though the area they first destroyed the black wooden Gate and battle the two Cloaking Burrow-nits and then use the Scale to reach the land area where the Chance Totem is/was. It is also near the location of the Ultra-bitter Spray producing Burgeoning Spiderwort.