漢德百科全書 | 汉德百科全书
Massachusetts-MA
Gletschertopf/Glacial Potholes
The "Glacial Potholes" began to form after the last glacier age when the Deerfield River first started to flow over these rocks, about 14,000 years ago. The formation of these river-eroded features thanks to the great glacial lake, Lake Hitchcock, that filled the Connecticut Valley and also extended into the lower Deerfield Valley. While Shelburne Falls was not under Lake Hitchcock, it was under the sediments of the Deerfield River that built a delta into the lake.
International cities
Boston
波士顿（英语：Boston）是美国马萨诸塞州的首府和最大城市，也是新英格兰地区的最大城市。该市位于美国东北部大西洋沿岸，创建于1630年，是美国最古老、最有文化价值的城市之一。波士顿是美国革命期间一些重要事件的发生地点，曾经是一个重要的航运港口和制造业中心。今天，该市是高等教育和医疗保健的中心，它的经济基础是科研、金融与技术—特别是生物工程，并被认为是一个全球性城市或世界性城市。
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