ABSTRACT Beginning in 1903 with the creation of Wind Cave National Park, ten National Park Service units have been created because of the caves they contained. Since the establishment of the National Park Service in 1916, over 5,360 caves are known to exist within at least 99 park units. These caves are found in different types of rocks and were formed by several different mechanisms. The most prolific landscapes that have formed caves are those in soluble rocks such as limestone. Known as karst landscapes, at least 114 park units contain some amount of karst. In the early days, cave parks were developed for their commercial and recreational values. Little was known of the processes that created caves or the many resources that encompassed these entire landscapes. With the help of cave and karst enthusiasts and researchers, and the advent of cave and karst resource managers, the National Park Service has made great strides in understanding these resources. This has led to increased educational opportuniti...

中文翻译：

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了解和保护洞穴和喀斯特地貌

摘要从1903年创建风洞国家公园开始，由于其中包含的洞穴而创建了十个国家公园服务单位。自1916年国家公园管理局（National Park Service）成立以来，已知至少有99个公园单位内存在5,360个洞穴。这些洞穴发现于不同类型的岩石中，并由几种不同的机制形成。形成洞穴的最多产的景观是可溶岩石（如石灰石）中的景观。至少有114个公园单位被称为喀斯特景观，其中包含一定数量的喀斯特。在早期，人们出于商业和娱乐价值而开发了洞穴公园。几乎没有人知道产生洞穴的过程或涵盖整个景观的许多资源。在洞穴和岩溶爱好者和研究人员的帮助下，随着洞穴和岩溶资源管理者的到来，国家公园管理局在了解这些资源方面取得了长足的进步。这导致了更多的教育机会。