In Greek mythology, Styx is a deity and a river that forms the boundary between Earth and the Underworld. To get to this cache, unless you come in from the north, you will have a black water creek crossing that will look like the river Styx. Luckily I had Trailmaster Buc with me to walk/swim it first. The bottom is solid, the center is deep, but hugging the west side got me easily across. 4x4 with clearance is a good idea and if it's been raining at all I would recommend a kayak. Ha! Once on the other side it's a walk in the park. No bushwhacking required.
Good luck and happy hunting!