The adventure: Walk in a 'living laboratory'

What: An interpretive walk through the hills near Lake Berryessa, led by the Quail Ridge Wilderness Conservancy.

When: 2:30-6:30 p.m. Saturday

How to get there: Markley Cove Resort, where the walk begins, is off Highway 128 west of Winters. From Sacramento, take Interstate 80 west to Highway 113, then north to West Covell Boulevard in Davis. Go west on West Covell, which changes to County Road 31, which becomes Highway 128. Continue west through Winters. Markley Cove Resort is the first building to the right after passing Monticello Dam at Lake Berryessa.

The organizers say: Just in time for Earth Day (April 22), Quail Ridge conservancy founder Frank Maurer said every guided tour prompts appreciation for the outdoors and the conservancy's commitment to preservation.

"Every day is Earth Day with us," he said. Maurer said the reserve area was in peril of development when the conservancy was founded three decades ago. The area, with its different grasses, oaks and rolling hills, is "a museum of how plants grow" and a "living laboratory," Maurer said.

Bring some essentials: a hat, water, sunscreen and a snack. Maurer also recommends bringing a camera and binoculars.

The walks – which are also scheduled May 1, June 12 and July 10 – take about four hours.

Cost: Free admission and parking.

Information: An RSVP is required; call (530) 219-4477. For details, visit www.quailridge.org.