Smith said the igloo was about five feet tall and had walls of snow about 10 inches thick. He said the students had either constructed it themselves or found it abandoned.
Smith said the guard passing through the area heard voices and smelled pot before finding the four men inside.
One of the students was cited for marijuana and possession of drug paraphernalia. All were referred to campus officials for possible disciplinary measures.
Smith said the igloo was destroyed with a sledgehammer.
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