Search for: [Description = "Small mammals were live\-trapped for 16 months on 12X12 study grid \(1.2 ha\) located in a subalpine forest on the Eastern Slope of the Colorado Rocky Mountains at an elevation of 3,120 m. Snow covered the ground for 7 and 1\/2 months of the year. Subnivean activity of Clethrionomys gapperi and Peromyscus maniculatus was monitored by use of live\-traps located within trap chimneys."]