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Walden Pond - Wikipedia, the free encyclopedia
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日期:2024-09-08
Walden Pond is a lake in Concord, Massachusetts in the United States. A famous example of a kettle hole, it was formed by retreating glaciers 10,000–12,000 years ago.[4] The pond is protected as part of Walden Pond State Reservation, a 335-acre (136 ha)[5...看更多