Visitors to Martha’s Vineyard can now traverse a property once owned by Jackie Kennedy Onassis. Known as the Squibnocket Pond Reservation, the 330-acre reserve opened last year and added a new trail in July.

© Gabriela Herman for The New York Times

Caroline Kennedy and her family sold more than 330 acres of coastal land on Martha’s Vineyard to conservation groups. It comes with some caveats.

© Gabriela Herman for The New York Times