Steal a rock from the Gettysburg National Military Park battlefield and you could end up paying $130 in fines.
Or, you could be cursed.
Rocks, twigs and other items taken from the Civil War battlefield are mailed to the park every year, many with anonymous notes confessing their crime and writing about the downturn their lives had taken as a result, according to a blog post by Park Ranger Maria Brady.
"My wife and son walked out on me. I lost my house and majority of what I owed and ended up in prison for nine years," stated one letter mailed in May.
"I've had nothing but horrible times, injured on the job, several surgeries, relationship failure..." wrote another visitor who lifted a small stone and twig during a 2006 visit.
Lifting one stone may not seem like much but, with more than one million visitors to the park, the damage would have an adverse impact on resources, stated Brady.
"Many of the stone walls here in the park are historic, and existed at the time of the battle," she stated.
According to the website ParksFolio, where visitors to national parks can share photos, there were close to 2,000 reported incidents of vandalism in national parks in 2012. An estimated 12 tons of petrified wood is stolen from the Petrified Forest National Park every year by visitors in northeastern Arizona, according to the site.