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https://bouldercountyopenspace.org/i/wp-content/uploads/2019/03/altona-schoolhouse.jpg19201152In 2012, Boulder County purchased the 210-acre Heil Valley Ranch-2 property for $6,000,000. The property is located in north central Boulder County. The Altona School is located on the southern boundary of the property and faces Left Hand Canyon Drive. The Altona area operated as a supply and transportation center in the mid-to-late 19th century. […]