The World’s Most Amazing Swimming Holes Technically, a “swimming hole” is any deep place for swimming in a stream, lake or river. But for this post the editors decided on a more ridged set of criteria: First, we considered only swimming spots that were inside some sort of hole in the earth. Second, we decided to count only naturally occurring swimming holes. Finally, we only considered swimming holes that offered temperate waters.
The only marker of international boundary known to exist within the Continental United States is located west of Joaquin, Texas. The marker is located on the Texas-Louisiana border about fifty yards north of Texas Farm Road 31. The site was once the boundary between the United States and the Republic of Texas in 1840.