The pond loop passes through a section of the Sanctuary that was used as a conservation and development project during the Great Depression. According to news reports from the 1930s, 20–40 students were employed clearing trees and replanting, jobs which allowed them to stay at the college in a time of unique financial hardship. A letter from Professor Alfred Goodale in 1946 notes “In the developmental stage of the Sanctuary, under the director of Mr. Walter C. Markert [Grounds Supervisor], undergraduates did the very valuable laborious grading of approximately four miles of paths and trails; construction of the dam for the pool in the Tuckerman Lot; the building of the long dam which impounds Tyler Pool. In addition, they cleared away much undesirable undershrub and planted the larger part of the introduced trees. This labor by the undergraduates was toilsome and valuable.”
In 2020–2021 the student Outing Club began leading trail maintenance sessions under partnership with Conservation Works, reviving these traditions.