Set off on a hike through Indian Valley Nature Preserve (If a red flag warning is in effect this event will be cancelled). This 6.5 mile hike is billed as for ages 18 and up. We request that no pets (except service animals) attend. High fire danger cancels: Call (415) 893-9527 after 8am on the morning of the event to hear a recorded message if cancelled. Otherwise, Meet at the trailhead on Vineyard Rd in Novato.