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Join our City Nature Challenge volunteer team on a stroll in the canyon followed by an insect blacklighting event.The program will begin with a short overview on identifying and documenting species using the iNaturalist app. Then, as group(s) or individually, head onto the nearby trails to identify as many species as possible (4-6:30 pm). There will be a break for supper...bring a picnic to enjoy here or go to one of the many restaurants nearby. After supper, blacklight stations will be available (8-9:30 pm) for you to observe and photograph insects!
The City Nature Challenge is an international competition to see which city can document the most species of living things from April 24-27. It's easy to participate by joining an event or making observations on your own using iNaturalist! To find out more about CNC 2026 and how to download iNaturalist visit: CNC-SA.org. The San Antonio Metro Area has a title to defend, having placed first in the nation last year (and the year before)! Every observation counts toward protecting and celebrating our region’s biodiversity.
Who Is Invited:
This activity is open to all ages and includes both a short, seated activity followed by an easy hike to make identifications. Minors must be accompanied by their parent or legal guardian. No pets please. Please download the free iNaturalist app prior to arrival.
Where to Meet:
Park in Lot A and meet at the Group Picnic Pavilion.
Accessibility:
This activity is somewhat wheelchair-friendly. There is a paved path leading from the parking lots to the Picnic Pavilion, a distance of about 120'. The Pavilion is near an accessible restroom. We will take a short hike (less than 0.5 mile) on the Discovery Trail, which has a crushed granite surface.
If other ADA assistance is required, please request modifications by emailing [email protected] at least 2 weeks in advance.
How to Prepare:
Registration is NOT required for this activity, but please arrive a little early. There is sometimes a line at the Fee Booth.
Though the event is free, entrance fees to the Natural Area do apply. We often fill to capacity. To ensure entrance and save time at the Fee Booth, please pre-purchase and print out a day pass. Day passes can be reserved beginning one month before the date of your visit.
*Bring a fully-charged cell phone with the iNaturalist app already installed. If you have them, a flashlight, blacklight, and/or headlamp may also be desired.
Dress for hiking outdoors, in layers that can be added or removed as the weather changes. Comfortable shoes, sunscreen, and a hat are recommended. Bring at least 1 liter of water per person and a snack.
Cancellation:
This program is weather-dependent and subject to cancellation. Check trail conditions by calling GCSNA's main office at 210-688-9055, or go to the GCSNA webpage, Instagram, or Facebook.
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Event Venue
12861 Galm Rd, San Antonio, TX, United States, Texas 78254, 12861 Galm Rd, San Antonio, TX 78254-9588, United States, Helotes
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