It's in Everglades National Park.
As for the Ashley gang,i've done a little research and believe what little they had left after they met their demise at the Sebastian river bridge in late 1924,was probably used by ma Ashley to build a new house out at Twin Oaks after the police raided and burnt down the original house out there.I think $100k is a far stretch from the actual amounts they had buried here and there.Now a smaller cache or two is quite possible still.

Oh yeah,the northern edge of the Everglades in the 1920's was much closer the the ocean as compared to today.(hint) Also,old man Ashley (John's dad) quite possibly has a cache or two buried in the vicinity of his old moonshine still/s out in the glades too.
