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Ultraviolet Night Hike from Hunting Hollow

January 19, 5:00 pm - 8:00 pm

Come explore a surprising world of color at night! There are a number of animals, plants, and minerals in the park that fluoresce under long-wave ultraviolet light. Millepedes that glow blue-green, lichen that radiates bright pink, pinecones speckled with neon-green tree sap, flowers with interesting patterns. What we find will amaze you.

We’ll meet in the Hunting Hollow parking lot at 5pm and hand out ultraviolet flashlights. From there we’ll explore the various creek crossings and trails to see what’s fluorescing now that rain has brought water flowing through the park again.

Overall the hike will be about 3 miles with around 500 foot cumulative elevation gain. We will walk at a casual pace so that we can explore the area, take lots of photos, and talk about what we’re seeing.

We will have UV flashlights that you can borrow, but please bring your own if you have one.

An approximate timeline for the day …

5:00pm Meet at Hunting Hollow Parking
5:17pm Sunset
5:45pm Civil Twilight End
8:00pm Return to Hunting Hollow Parking

What to bring: sturdy waterproof footwear, clothing in layers, water, a snack, a flashlight, a camera, and hiking poles if desired.

Driving directions: Meet at the Hunting Hollow entrance over by the covered picnic table and bulletin board. For directions please visit …

Day use fee: Hunting Hollow is $6.00 per vehicle and self register. Please bring exact change for the iron ranger envelopes.

Dogs: Sorry, only service dogs are allowed in Hunting Hollow.

Cautions: The Meetup trip leaders and guides are volunteers willing to share their experience in a social hiking environment. Hiking risks include ticks, poison oak, rattlesnakes and uneven trail surfaces. Each participant is responsible for evaluating their own hiking skills and stamina to determine if this hike is suitable for them to participate.


January 19
5:00 pm - 8:00 pm
Event Category:


Hunting Hollow Entrance
Gilroy Hot Springs
Gilroy, CA 95020 us
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