Extra-terrestrial beings have long been suspected of creating the most spectacular landforms on the planet. When impressive structures are discovered, and humans can not readily explain how they came to be, aliens are the go-to group for pinning the features on.

How did this get here? Must have been those bored aliens. If there are aliens, then they are clearly running out of things to do on their own planets, because they keep coming to ours and making awesome things.

Yeah. We hate to burst those alien-loving believers' bubbles, but those magnificent landforms weren't the contributions of aliens. The many fascinating structures that grace our planet are not gifts from our neighbors from the celestial realm.

In fact, though Ancient Aliens has made a lot of claims, they've since been debunked.

15 Super Strong Aliens Constructed Sacsayhuamán? Not Likely

Long ago, someone, or something, took thousands of massive stones and stacked them together in perfect patterns. Alien astronaut theorist Giorgio Tsoukalos believed that aliens had taught the Inca people to melt the rock and reform it. The truth is the ancient Incan people were likely the masterminds behind this fortress as they were phenomenal builders, says National Geographic.

14 Nazca Lines Look Like They Were Done From Outerspace

Two hundred miles southeast of Lima, Peru, lies a field of lines so complex and perfect that no one could have been behind this work of art that didn't hail from space. Only beings from above would have been able to create such pictures of precision, right? Wrong. Geoglyphs can explain the method behind the Nazca Lines. Geoglyphs are a human idea, not an alien one.

13 The Egyptian Pyramids Have Long Been Though To Be The Work Of Extra-Terrestrials

Dude. How on earth did humans create the Egyptian pyramids? No way could these extraordinary structures be the work of mere mortals. People have claimed the 4,500-year-old pyramids to be the work of aliens for as long as aliens have been a hypothetical thing. Scientists do not know precisely how they were constructed, but they do know that humans' hands were behind the pyramids. Next.

12 Stonehenge Is Not An Alien Landing Pad

Mysterious Stonehenge is another Earthly feature that people assume was put there by extra-terrestrials. The most common theory is Stonehenge serves as some sort of alien landing pad. Scientists aren't sure about the true meaning behind these massive stones, but they do know that it was possible for humans to create this as far back as five thousand years ago.

11 Teotihuacán Was A City Of Gods Likely Built By Humans

Because Teotihuacán is thousands of years old, massive, and as intricate as many cities in the modern world, people often think that celestial beings with super-human intelligence and strength were the only explanation for this City of Gods. Nope. This is humans all the way. Really advanced humans, but humans nonetheless.

10 Easter Island Is Incredible, But Not THAT Out Of This World

One thousand years ago, these giant figures ended up on Easter Island. Pretty incredible, right? Many people genuinely believe that only aliens could be behind this ominous place on Earth. Sorry alien-lovers, but the ancient Rapa Nui people get to lay claim to this one. Of course, something wiped that whole group of people out, so we can not even get to the bottom of this mystery.

9 Is The Face On Mars The Aliens' Way Of Communicating With Us? Doubtful.

The Face on Mars is one of the alien theorists' favorite things to conspire over. What are those higher beings building on Mars, and what might it have to do with us here on Earth? The short is nothing. In 2001, scientists were able to take a close look at the Mars Face, and they realized that it was merely a Martian mesa.

8 Machu Picchu Leaves Us With Some Questions, But Not Ones That Aliens Can Answer

Machu Picchu is considered to be one of the Wonders of the World. Was it a gift from extra-terrestrial species? Nah. Those wild theories that the ancient people of these lands worked with alien life forms to create such a stunning space are way too out there. This was the work of highly skilled people.

7 Puma Punku Was Likely The Work Of Skilled Carvers, Not E.T.

Puma Punku was discovered by the Incans back in the 1400s. Even back then, it was already abandoned. No one knows how or why this place came to be, but many believe it holds great importance to the alien species (assuming they are out there.) Looking at other great cities and landforms in Central and South America, this was likely the doing of early humans.

6 The Grand Canyon Has Some Very Sketchy Caves That Scientists Have Trouble Explaining

In 1909, a story came out in the Arizona Gazette, stating that hidden caves full of Egyptian artifacts had been uncovered in one of the many caves in the Grand Canyon. It was also claimed that many of the uncovered treasures were left there by... you guessed it... aliens. While no one has really figured out the story behind this, wild theories abound.

5 Derinkuyu Underground City, Turkey Looks Like It Is From Another Planet

Under the country of Turkey sits a six-story city made entirely from bedrock. Who, how, and what? Some theorists firmly believe that this city served as a bustling alien city right under our human feet. The truth is, it was likely constructed to protect humans from other groups of humans.

4 Richat Structure, Africa Is The Work Of A Volcano, Not An Entrance To An Underground Alien City

This strange landform in Africa is said to be a peculiar portal to Alien dimensions. If this were true, Alien-lovers everywhere would be lined up to get into another world. Sadly, for fans of the celestial, this weird thing is nothing but a very old volcano that has been busy eroding from the top up over long periods of time.

Devil's Hole, in Death Valley, is said to be blocked off because of a special species of fish that lives deep down in the cavern. Others claim that Devil's hole is the site of a UFO crash. We are going to side with science here and assume that the government wants to keep the Devil's Hole Pupfish safe.

2 Hypogeum of Hal-Saflieni, Malta Is Mysterious And Has Some Unexplained Oddities, But It Isn't The Handiwork Of Our Friends In Space

This place is a wild one to be sure, but an alien camping ground? Not likely. Will you go into a trance if a man starts chanting underground, yes. Will aliens abduct you and take you to their home planet? Nah. Believers claim that this is an alien hangout, but scientists strongly disagree.

1 Baalbek Stone, Ready For Alien Liftoff

The Baalbek Stone, located in Baalbek, was not put here on Earth by giants, Gods, or by alien lifeforms in need of a spaceship landing pad, (although many theories out there claim that the Gods and aliens were one and the same). This landform is one of the many accomplishments of early humans who clearly had a penchant for serious quantities of manual labor.