Fifteen high school students as well as community members and educators from Mosakahiken Cree Nation are with CPAWS Manitoba and Twin River Travel this week at Little Limestone Lake; the world’s largest and most dramatic colour-changing marl lake. In 2011, after many years of CPAWS working together with Mosakahiken, the lake and its surrounding landscape was protected from industrial developments as a provincial park but now neglect and visitor misconduct are posing a challenge to the lake.