When you arrive, ask at the gate for the trail leading to the fossils. I remember that we parked not too far from a dirt path leading to the section by the lake where you'll find them. What I saw was quite unexpected (but all worth it in the end). A rock floor covered the whole ribbon of "beach". The breaking waves gave off a fishy smell. There was also the odour of the stagnant water evaporating from various natural basins carved in the stone. We had to choose between mosquito bites under shady trees and sunburn in open areas (having brought none of the required sprays or creams). Rock spiders heavily patrolled the place. Then, from up close, we noticed that the fissures trapping the stagnant water were covered with large fossils dating back 350 million years! Later, we walked to a viewing tower, then we drove to the beach on the other side of the park where (nice but hard on bare feet) rounded pebbles formed the lake bed.