The Monoliths (Manchester-by-the-Sea)
Park in Massachusetts
The Monoliths, also known as Agassiz Rock, is a 116-acre (47 ha) park in Manchester-by-the-Sea, Massachusetts, owned and maintained by The Trustees of Reservations. The park's name is from two examples of large glacial erratic boulders plucked from bedrock. As glaciers scoured this landscape, the mass of bedrock forming the hill proved more resistant than the surrounding soil, forcing the bottom of the glacier up and over the hill. The north side was smoothed and the south side left steep and rugged as the glacier broke off chunks of rock as it passed.
Little Rock is a granite monolith on one of the trails. It rests on a small jagged stone, leaving an opening below. A short distance away, other boulders lie perched on the edge of this glaciated upland. Below, in a small shrub swamp, rests thirty-foot-tall Big Rock. Its depth is unknown.
The trail to the site is a one-mile loop that passes both Big and Little rocks.
The public source identifies “The Monoliths (Manchester-by-the-Sea)” as park in Massachusetts. This brief keeps that definition visible, then builds a research path around Monoliths, Manchester-by-the-Sea and Park.
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Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Jun 27, 2025. The linked authority identifier is Q4691429. Authority coordinates are 42.596, -70.767. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
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This entry incorporates text from “The Monoliths (Manchester-by-the-Sea)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.