Don't think that was proven in mainstream news either anon.
https://www.newsweek.com/jeffrey-epstein-urban-explorer-virgin-islands-videos-1594495
The "urban explorer" also referred viewers to his YouTube channel, which has vlogs from the trip available to watch. At the end of "part 2," viewers noticed an image of tunnels flash onto the screen without a description.
Bracco claimed to Newsweek that the image was unrelated to the island, but that, "If I was to have entered the unlocked temple, that I clearly came into close contact with, I would never self incriminate by showing my audience how I got in. Getting in would then subsequently have allowed me to access the tunnels. Between my two visits to the island I did peer into the temple from the outside and noticed the staircase descending downwards."