Outside Minds Concert Series The Outside Minds Concert Series (part of the J St. Regulars Radio Hour) will continue with shows at the Arcata Marsh Amphitheatre, located just a short trail away from the Arcata Marsh Interpretive Center. The events will be site based and feature collective breathing, poetry, and music. The Lyndsey Battle Trio will open the series on July 14th along with other performers. July 21st performers TBD. July 28th Poet Katy Gurin, James Zeller and Katie Belknap.