Every month, on the night of the full moon, Nancy Lewis and her crew of Spanish-language champions convene at South Mountain's Javelina Trail to sweat out basic grammar, pronunciation and vocabulary under a glowing light other than a fluorescent one. Fluent speakers and Spanish-language newbies meet monthly to participate in a physical and linguistic workout en español. The sociable atmosphere is led by a number of hiking guides, including natives of Mexico and Ecuador as well as locals who teach the language professionally. Participants meet monthly at sundown in the Beverly Canyon parking lot, 46th Street south of Baseline Road, for the moderately challenging two-hour jaunt that is a longer yet less grueling version of Piestewa Peak. The events are English-friendly, so if you can't quite roll your tongue rapidly enough while screaming soy perdido! ("I'm lost!"), somebody will be there to guide you. The hike is free; just show up and glow.