huckleberry chert

Huckleberry Botanic Regional Preserve is a little-visited piece of wildland just over the Oakland Hills crest south of Sibley Volcanic Regional Preserve. It owes its existence to this rock, the Claremont Chert. The brochure lavishes attention, and rightly so, on the plants of the botanic preserve, but it’s also a good place to see the chert in many settings. Cliffy here or buried there, shaly or rugged, the chert asserts itself amid the soils and growth like the bass player in a jazz combo.

Owing to its history, the Claremont Chert is high in silica and low in nutrients. It drains quickly and breaks down slowly, and for the purposes of today’s vegetation it slows down the natural process of faunal succession—the series of plants that goes from pioneer species to climax forest. Thus where much of the hills is a uniform oak/madrone woodland, the Huckleberry Preserve is a variegated assemblage of everything from gravelly manzanita balds to soft seeps populated with irises, plus huckleberry thickets of course. Hike the nature trail and meet some of the natives. The self-guiding brochure carefully states the role of fire in maintaining the hill ecosystems, mainly to show how the Huckleberry is an exception. But these days, everywhere you look in the hills is a fire long overdue. Some day we will have to catch up with the Ohlone tribes, who managed these lands with regular burnings.

mount diablo

The trail provides several fine views eastward. You can pretend that white settlement never happened and imagine Mount Diablo pristine, as it was when Cabrillo forced his men through this land 250 years ago. (click for larger version) And you can enjoy Round Top’s symmetry from the rare southern vantage:

round top

3 Responses to “Huckleberry”

  1. Kaylee Kirkpatrick Says:

    Where can you look for blue geodes? I want to go hunting for them but I cant find where to look.

    [Try a rock shop. Collecting is not allowed in the parks. — Andrew]

  2. sheldon white Says:

    And, if you know where to look, you can find fine blue geodes 3 – 6 inches in diameter. Watch out for poison oak!!

  3. Mike Hardy Says:

    Huh. As an avid cyclist, I’m sure I have either ridden through this or right by it, but never really paid attention (typical of a cyclist ;-) ).

    I wanted to know more though, and I’ll probably stop through here.

    Here’s the link for more info if to save you googling:

    Thaks for the great pictures, Andrew. Fire danger or not, I love that golden color.

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