If humans went extinct tomorrow, the Hoover Dam would be one of the longest-lasting marks of our existence. The concrete isn’t expected to crumble for 10,000 years, and there’s a star chart at the base that will let future visitors pinpoint exactly when it was built.
Weekend Hashtag Project is a series featuring designated themes and hashtags. For a chance to be featured, follow @instagram and look for a post every week announcing the latest project.
#WHPpostcard asked community members to make photos and videos that capture a sense of place. Each week, we feature some of our favorite submissions from the project, but be sure to check out the rest here.