ah, it's listed here, but still kinda vague:

http://www.nps.gov/isro/planyourvisit/o ... vities.htm

was surprised to do a forum search and find no results for "Passage Island."

if i come to IR, im going to want to make an attempt at getting there, if for no other reason than to say ive been everywhere in MI.
ive heard they do occasional tour boat trips out there. has anyone here done that & know ...

cool, thanks!

actually, considering how the Forest Service has recently wiped out / capped all the old shafts on the Norwich Bluff in Ontonagon County, i am very surprised to learn that there are any open mines to be found on the Isle at all!

list of some mine sites on the Isle:
http://www.mindat.org/lsearch.php?from=nsearch&loc=Isle+Royale+National+Park
there are no coordinates listed for those, but if you look on DNR topo maps many are shown (how exact they are plotted is up for speculation), and ive managed to mark most of them on my ...