Actually, he is referring to Rancho Bonito Springs in Polk County at the end of Hwy 54. This place would pop up on here a lot "back in the day" and cause quite a stir. Mainly because, at the time, any owner out there wanted to keep it quiet. It is not a public place to ride. You need to own a deed out there similar to River Ranch.
If you search this site for "rancho" or "rancho bonito" you can find the old posts.
A google search is good, too.
https://www.google.com/search?sxsrf=ALeKk01pVxeZ3KOVLtxYk_OKNaWCNZikIg%3A1602004947379&ei=06d8X5jFFqyE5wLLzbPgBw&q=rancho+bonito+springs&oq=rancho+bonito+springsI went out there once as an invited guest many years ago, but never went back.