Rising to a height of 1592 feet, this “tall hill” is
actually one of the highest points in Marin County. The ridge lines that run
together to form Loma Alta divide the four major watersheds of the county:
Miller Creek to the northeast, Corte Madera Creek to the southeast, Lagunitas
Creek in the southwest, and Nicasio creek in the northwest. This preserve
encompasses most of the grass-covered south facing slopes of this broad, gently
sloping hill.
Running along the lower perimeter of the preserve is the Old Railroad
Grade Fire Road. During winter, a prominent feature of this lower
trail is the 25-foot cascade known as Fairfax Falls. To reach the
summit, take the Smith Ridge fire road, or the extremely steep Gunshot
Fire Road. Either way, spectacular views of the entire Bay Area will
reward you each time you stop to catch your breath. Near the top of
the hill, the Loma Alta Fire Road continues north then drops off gradually
to the Big Rock trailhead at Lucas Valley Road. This is also an important
link in the Bay Area Ridge Trail. A public trail easement encumbers
this section of road, so please stay on the road. The exposed grassland
in this area is an important breeding site for horned larks and western
meadowlarks. Further down, look for lazuli buntings and chipping sparrows
along the road. Near the bottom of the road you’ll pass through some
patches of serpentine soil that provide one of the best late-season
wildflower displays in the county.
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Featured Species at this preserve:
Northern Harrier
Western Meadowlark
Miniature Lupine
Mule Deer
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