Haystack Rock 草垛岩

On a remarkable stretch of Oregon's coast called Cannon Beach sits a mammoth monolith that formed as a result of lava flow 10 to 17 million years ago. At 235 feet tall, the rock formation is the third tallest intertidal structure in the world. Surrounded by shallow tide pools, it allows up-close-and-personal access, which draws in 200,000 visitors annually. Photo by Shutterstock.

随着1亿到1.7亿年前熔岩流过，在俄勒冈州（Oregon）海岸一块引人注目的叫做坎农海滩（Cannon Beach ）的外延海滩处形成了一座庞然大物。凭借着235英尺的高度，这座岩层成了世界第三高的潮间带结构。岩层由浅潮带环绕，允许近人们距离接触，由此每年吸引了200,000游客。由 Shutterstock拍摄。