Ground water can often be seen seeping out of the lower parts of sand dunes eroded by Lake Michigan or small streams. Here, along the shore of Lake Michigan, the waves have caused the dunes to collapse somewhat, and exposed layers of sand and mud. Water cannot percolate through the mud and clay, so it seeps out toward the lake.
During cold periods, the seepage freezes into beautiful ice walls such as these.
I think beaches are more fun in winter months: No crowds, no dogs, no bugs!
And yes, we found fossil crinoids! These hasn't been a day when we visited the beach and not found a crinoid fossil.