Colorado Mountain Activities is a local guide for Colorado activities. Find lodging discounts, ski resort packages, summer & winter activities & much more. Colorado Mountain Activities is a local guide for Colorado activities. Find lodging discounts, ski resort packages, summer & winter activities & much more. Colorado Mountain Activities is a local guide for Colorado activities. Find lodging discounts, ski resort packages, summer & winter activities & much more. Colorado Mountain Activities is a local guide for Colorado activities. Find lodging discounts, ski resort packages, summer & winter activities & much more.