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Albrightsville, Pennsylvania
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Boulder Field in Hickory Run State Park was designated a National Natural Landmark in 1967 due to its unique geological features.
The field covers an area of about 16.5 acres, making it one of the largest boulder fields in the eastern United States.
The field was formed during the last Ice Age, approximately 20,000 years ago, through a process known as periglacial activity.
Despite its rocky terrain, the field is remarkably flat, with a slope of less than 1 degree across its surface.
The boulders range in size from a few inches to over 25 feet in diameter, with some weighing several tons.
Visitors can explore the field throughout the year, experiencing its beauty in all seasons, from snow-covered winters to lush green summers.
Boulder Field is accessible via a short, easy hike from a nearby parking area, making it a popular spot for families and nature enthusiasts.
