GRAHAMSVILLE, NY — Mastodon bones have turned up in Greenville and many still lie beneath ponds and swamps in that region. Today, rich farmland in the Wallkill Valley has yielded the remains of many ice age mammals. Learn about these and more at the talk “Hudson Valley in the Ice Age” by Robert and Johanna Titus on Sunday, November 9 at 2 p.m. at the Time and the Valleys Museum.

Based on the their book “Hudson Valley in the Ice Age,” professors Robert and Johanna Titus tour the Hudson River Valley and the Catskill region and see it with the eyes of geologists who see a half-mile-thick sheet of ice grinding its way down the valley and overtopping even the highest mountains. With the Tituses as your guides, “see” an ancient Manhattan high and dry with the Atlantic shoreline 100 miles to the southeast, North/South Lake State Park as a giant and frigid “waterslide park,” and the immense expanse of Glacial Lake Albany stretching the entire length of the Hudson Valley.

The program is free and includes admission to the museum’s three floors of exhibitions. Signed books will be available for sale and refreshments are included. For more information call 845/985-7700 or visit www.timeandthevalleysmuseum.org.