This is from the top of the stairs leading down to the entry to the Twin Caves. I took all the cave shots with my little S90. I was too chicken to take my SLR on a cave boat tour. :)
Boat tours are offered into Northern Twin cave located in Spring Mill State Park. The tours last about 20 minutes and go about 600 feet back and turn around.
Twin Caves is open daily from 9 a.m. to 5 p.m. Cost is $3 for adults and $1 for children under 11 years of age. Tours run on the half-hour; no advance registrations are accepted (sign up on day of tour only). No children under 3 years of age are allowed on the tour.
Twin Caves relate links:
Twin CavesSpring MillSpring Mill State ParkIndianacaveboat