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O'Neil Hill

Details unconfirmedPreserve · Williamsburg, MA
Right now

A Mass Audubon parcel on Depot Road, purchased in 2005 with community fundraising and expanded by the Valone family's donation of about 80 acres. It connects by trail to the town-owned Hall Conservation Area next door and forms part of a protected corridor running toward Graves Farm Sanctuary and the Conway State Forest.

What to expect

Parking
Free lot free · unconfirmed
Dogs
not allowed on the O'Neil Hill section (Mass Audubon dog-free policy); the adjoining Hall Conservation Area section allows leashed dogs
Managed by
Mass Audubon (part of the Graves Farm Wildlife Sanctuary complex) Website

Common questions

Is this the same place as Hall Conservation Area?
No, but they're next-door neighbors connected by a shared trail. O'Neil Hill is Mass Audubon land (dogs not allowed); Hall Conservation Area is town-owned (leashed dogs allowed). Locals and the trail map often refer to the combined network as "Hall/O'Neil Conservation Area."
Where do I park at O'Neil Hill?
Free lot (free).
Can I bring my dog to O'Neil Hill?
not allowed on the O'Neil Hill section (Mass Audubon dog-free policy); the adjoining Hall Conservation Area section allows leashed dogs

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BetaSome details here are unconfirmed (accessibility, precise parking). Details are sourced from public agency data and can change through the season. Confirm locally before you go. Updated 2026-09-13.