A strange monolith has appeared in northern Colorado. The shiny, tall, rectangular object appeared in a field about 70 miles north of Denver in Larimer County on Wednesday. The monolith was discovered on private property about two miles north of Horsetooth Reservoir in Larimer County. The unusual monolith drew crowds of curious onlookers as people wonder where it came from. Colorado's monolith appeared just days after another monolith appeared in a remote mountain range near Las Vegas. The Nevada monolith was removed quickly because of public safety and environmental concerns. Las Vegas police said how the monolith got there remains unsolved.