Gettysburg Civil War battlefield in Pennsylvania is one of the most haunted places in the US.

And a man has captured spooky footage showing two ghosts running across the road during a late-night trip at this infamous battlefield.

Greg Yuelling, 46, took the video as he was driving through the historic site on a visit with his family.

Speaking to The Sun, Greg said:

"We just went there as tourists, to learn more about the history of the Civil War and see the old battleground."

"While driving along one night, and we started hearing noises."

"I heard things to the left, and my uncle heard things to the right, and there was a fog. However, the fog was weird because it was only in one patch, not dispersed."

"Then we saw these shapes moving in the darkness. They were the size of humans."

"One of them ran right through the cannon. It was scary. It was crazy. My uncle got so scared. He rolled up the window."

"We went back and watched the videos over and over again. And then we blew them up on the big screen to get a closer look. That made us even more freaked out."

"It was really exciting. But I also got this strange, ominous feeling. Like something was telling me to go back there."

"I couldn't go to sleep, but I was creeped out, so I didn't go."

The Gettysburg site is where one of the most brutal and bloodiest battles of the American Civil War took place in 1863.

According to records, more than 51,000 soldiers died in the three-day-long battle along with 5,000 horses.

While some soldiers died in triage units, many more bled to death on the battlefield as the battle raged.

Greg said:

"I've heard people say you can catch videos of ghosts around there. But we were so skeptical until that night."

"I always questioned the validity of those ghost videos you see on TV, I was always pretty disbelieving. I believe everything now."

The video below attempts to point out the apparitions as they appear.

While Greg might be a believer, most of the people who watched the video on YouTube aren't.

Many claim it's just some water on the windshield.

However, Greg isn't the only person to have filmed ghosts at this haunted location.

Some few years ago, another person captured apparitions on camera near cannons at the site.