Not sure if this has been brought up before but i can't seem to find too much beta on the subject. Where exactly is it and is there a gate sealing it off? If so is access ever granted!? If anyone has any info that would be sick!
Its under lock and key. They are pretty picky about who gets access. Best bet is to get in with a group trip by meeting people at a grotto meeting like rob said. Not sure when/where those are held. If you wanna get adventurous head up to Tony's Grove in Logan Canyon. Lots of caves with zero access issues.