A rock formation in the Mississippi River normally only reachable by boat is accessible by foot for the second year in a row as water levels plummet. Tower Rock juts out of the Mississippi River ...

A drought has exposed Tower Rock, a Mississippi River rock formation. Here's what it looks like The site is normally only accessible by boat. But, tourists hoping to visit might be disappointed.

Usually, the path to Tower Rock is covered by the rushing waters of the Mississippi. For the past three years, levels have dropped enough for a big opportunity. "We had to make it out," Erin ...

However, according to Perry County Presiding Commissioner Mike Sauer, the road to Tower Rock, County Road 460, is closed due to pipeline construction. Roads will reopen when construction is finished.

Tower Rock becomes walkable when water levels drop below 1.5 feet at a nearby river gauge. - Veronica Merrell CNN’s Rachel Ramirez and Brandon Miller contributed to this report.

According to the Missouri Department of Conservation's website, the rock formation is "an erosional remnant left as a result of Mississippi River channel shifts."Composed of limestone, the rock ...