The Michigan Interlakes Grotto (MIG) is a chapter of the National Speleological Society (NSS),
a nationwide association of cave explorers and scientists with over 12,000 members.
The MIG has about 50 members. There is a wide range of occupations, ages
and special interests in cave exploration, including biology, climbing, diving,
conservation, geology, photography, surveying, writing and even politics.
Membership in the NSS is strongly encouraged but not required, except for officers.