Trail-Blazing Walk

The East Hampton Trails Preservation Society will host a "Mystery Hike" on Sunday of between five and seven miles, beginning at 11 a.m. The trail-blazing walk will be led by Rick Whalen and will include some bushwhacking. Hikers who "enjoy a physical challenge, with a taste of uncertainty in the outcome," have been urged to join in, and to bring liquids and snacks.

The mysterious event will commence at the entrance to the George Sid Miller Trail on Fresh Pond Road in Amagansett, about a mile north of the intersection with Abram's Landing Road.

Michael McAllister of the Group for the South Fork is scheduled to describe Long Island's natural re sources via models and slides at the Group's office in Bridgehampton on Saturday from 10 a.m. until noon. Those interested have been asked to call for reservations.

For hikers willing to go a little farther afield, the Long Island Greenbelt Trails Conference will hold a six-mile walk around Miller Pond in Smithtown. Hikers will meet at 10 a.m. Saturday at the Conference offices in the Blydenburgh-Weld House in Blydenburgh Park, Smithtown.

On Sunday, the Conference plans a brisk walk along the beaches of Robert Moses Park in Fire Island, to and from Democrat Point, on the barrier island's western tip. The meeting place, at 1 p.m., is the Field Two concession building.

Also on Sunday, the Conference is hosting a four-mile trek through Riverhead's Indian Island County Park, at the mouth of the Peconic River. It will start at 10 a.m. The office in Smithtown can be contacted for more information and reservations.