Building the Foundation of Great Horsemanship Cornerstone Farm is a competitive riding program dedicated to providing top-quality instruction with a relaxed, stress-free, professional approach. Our mission is to help people maximize their love for horses and riding through continuously improving their riding ability and knowledge of horses following the classical principles of horsemanship. After 13 years on West Nelson Road, in August of 2018 Cornerstone Farm moved to the property at the NE corner of Airport Road and the Diagonal Highway/119 between Longmont and Niwot. The facility is now called Maple del Nero. We look forward to serving you at this new location, which has many great amenities. At Cornerstone Farm we work together as a team to achieve your goals, whatever your level, by looking at all of the options and choices available to you. We promote a positive learning environment ensuring an enjoyable riding experience.