Pratt Rock Park Geologic History with Robert and

Johanna Titus

August 31, 2019

Robert and Johanna Titus. Contributed Photo.

Zadock Pratt Museum presents Pratt Rock Park Geologic History with Robert and Johanna Titus, Saturday, August 31 at 1 p.m.

During their presentation, Robert and Johanna Titus, retired geology and biology professors, will discuss the geologic significance of the Pratt Rock site. This scenic and historic site preserves a complex geological past of particular interest. The sandstones and shales exposed at Pratt Rock were formed as river channel and floodplain deposits on the Devonian Age Catskill Delta, about 385 million years ago. A mere 16,000 years ago glaciers advanced down the Schoharie Creek Valley and sculpted much of what is Pratt Rock today. Following the presentation, there will be a guided hike at Pratt Rock in Prattsville.

Robert and Johanna Titus are well known in the Catskills for their newspaper and magazine columns, writing about the region’s geological history. They are authors of “The Catskills: A Geologic Guide” and the upcoming “The Catskills in the Ice Age.” You can learn more about their work at


   Book Presentation with Glenn Kreisberg

August 24, 2019

Glenn Kreisberg. Contributed Photo.

Zadock Pratt Museum presents Spirits in Stone book presentation by Glenn Kreisberg, Saturday, August 24 at 1 p.m. Mr. Kreisberg will be discussing his latest book and answering questions about the ancient practice of observational astronomy. Following his book presentation, Kreisberg will lead a hike at ancient monolith on Beech Ridge Road in Prattsville.

Author, outdoor guide, and radio engineer, Kreisberg researches archaeoastronomy and landscape archaeology in the Hudson Valley and Catskill Mountains of New York. His books include Mysteries of the Ancient Past, Lost Knowledge of the Ancients, and Spirits in Stone. He served two terms as vice president of the New England Antiquities Research Association (NEARA) and studied archaeoastronomy at SUNY and archaeoacoustics in Malta. He is co-founder of the non-profit Overlook Mountain Center ( in Woodstock, NY, where he lives with his wife and two teenage children.

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