Shepherd Spring? Anyone with experience diving?

Hoping someone might have information regarding Shepherd Spring. I made the canoe trip up from Goose Creek Bay several years ago and always thought it would be a great place to dive. Definitely a bit off the beaten path. Anyone been into the Cavern/Cave? I am currently Cavern certified and wondering if it would be worth the effort to paddle/drag a set of gear up from Goose Creek Bay. Also curious if their is a better way to access. Is there a cavern to speak of? Thanks.

No cavern. 150' deep right off the bat.