Northwest Coast Clam Gardens Nearly 2,000 Years Older than Previously Thought (image) Simon Fraser University Share Print E-Mail Caption A study led by SFU archaeology professor Dana Lepofsky and Hakai Institute researcher Nicole Smith reveals that clam gardens, ancient Indigenous food security systems located along B.C.'s coast, date back at least 3,500 years--almost 2,000 years older than previously thought. These human-built beach terraces continue to create habitat for clams and other sea creatures to flourish in the area. Credit Nicole Smith Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.