Workshop on avalanches: Travel films & events Workshop For the winter backcountry traveler, this two-hour session introduces and explains where and why avalanches occur and provides a basic approach to managing risk. Learn to recognize basic signs of avalanche danger and how to avoid it. When, where: 6:30 p.m. Tuesday at the REI store in Manhattan Beach, 1800 Rosecrans Ave. Admission, info: Free. Presentation Follow a group of adventure seekers as it explores the Santa Ana Mountains in Orange County. Learn about waterfalls, wildflowers and wildlife. When, where: 7 p.m. Wednesday at the REI store in Tustin, 2962 El Camino Real. Please email announcements at least three weeks before the event to travel@latimes.com.