A rare, unspoiled property fronting an expansive and remote stretch of the south shore in West Tisbury was placed on the market Thursday with an asking price of $92 million.

The 266-acre property, one of the largest contiguous landholdings on the Vineyard, is owned by Gerald DeBlois, a longtime resident of West Tisbury. The property that has been placed on the market does not include Mr. DeBlois’s residence which sits on a separate parcel of about 50 acres and is not for sale.

Wallace and Co. Sotheby’s International Realty has an exclusive listing.

The 266 acres include Big Homer’s Pond, a secluded, pristine Great Pond that lies along the Atlantic-facing shoreline in the rural reaches of West Tisbury. The property has more than 1,000 feet of beachfront and abuts Long Point Wildlife Reservation, a 500-acre property owned by The Trustees of Reservations with another 2,900 feet of beachfront. The Big Homer’s Pond property is largely undeveloped land that includes five parcels. Mr. DeBlois bought the property in the early 1990s. A conservation restriction has been placed on much of the northern portion of the land; the restriction is held by The Nature Conservancy, an international land trust devoted to researching and protecting rare and endangered ecosystems.

Reached at his home yesterday, Mr. DeBlois declined comment.

Tom Wallace, a partner in Wallace and Co., called the property rare and unusual. “Especially if we focus on the south shore of Martha’s Vineyard and the Atlantic Ocean, something of this size with this much privacy and this much conservation land around it — I believe it is pretty unique,” Mr. Wallace said.

He said the assessed value of the property is around $80 million.

No property on the Vineyard has changed hands for even close to that amount in recent years, although no properties of such a large size have been sold either. Herring Creek Farm, 215 acres of ecologically rare coastal farmland in the Great Plains section of Edgartown, sold for $64 million in 2001, which still stands as the largest property sale price in the history of the Vineyard.

Blue Heron Farm, the 28.5-acre Chilmark farm that, among other things, served as the Summer White House for the Obamas for three years, sold last year for $22.4 million. That sale, also handled by Wallace and Co. Sotheby’s, stands as the largest price for a single property.

A press release went out about the Homer’s Pond property yesterday from Wallace and Co. Sotheby’s that said the property will be marketed nationally and internationally.