For 17 years, Karla Carcamo’s family had a Labor Day tradition: they gathered all their cousins, aunts and uncles, grandparents, family friends, and even family members of family friends, and spent the long weekend camping at Mammoth Pool Reservoir in the Sierra Foothills. Alex Tettamanti and her husband Raul Reyes were regulars at Mammoth Pool, too – the off-roading club they belong to with Vicky Castro and her husband Rolando Rosales also visited the reservoir every Labor Day to play with