When the first of two massive earthquakes hit Venezuela, American tourist Jason Wang said he was on a mountaintop outside Caracas, about to get on a cable car to head down.
It was just after 6 p.m. local time on Wednesday when a 7.2 magnitude jolted the South American country's coastal region, followed 39 seconds later by an even stronger 7.5 magnitude tremor, according to the U.S. Geological Survey (USGS).
High up on El Ávila mountain, about 7 miles outside the capital city, the 39-year-old Wang of Las Vegas said he was caught in a scene of confusion and panic, unsure what had just occurred.
"I was about to board the cable car. I started recording myself going in, and the whole building just started shaking. The floor under me was shaking, and then all of a sudden everyone started panicking," Wang told ABC News on Thursday morning.
He said he and other tourists charged toward the exit of the cable car building.
"We were just rushing for the door to exit the building, and none of us knew what was going on until a few minutes afterwards," Wang said. "We realized we got hit with a massive earthquake."
Videos that Wang posted on social media showed him and others walking down the mountain back toward Caracas on a road blocked by numerous toppled trees. Wang said that as the sun was setting, he managed to get a ride back to his hotel in Caracas.
"I saw some people like cutting down trees that fell on the road to create a tunnel for us to get past," Wang said.
He said that when he finally reached his hotel and was able to get a WiFi signal, he learned that the twin tremors were the biggest earthquakes to hit Venezuela in a century, causing massive destruction and widespread death across Caracas, a city of more than 2 million people.
"Once I got back on WiFi, I was able to contact my family and friends and tell them I was OK," said Wang, adding that he was traveling out of the city to the jungle on Thursday morning to escape the danger being caused by numerous aftershocks.
Jorge Rodriguez, president of Venezuela's National Assembly, said that at least 188 people were killed in the earthquakes, and nearly 1,520 more were injured.
But the death toll is expected to grow. The USGS said there is a risk of more than 10,000 deaths, though official casualty tolls have been slow to be reported.
President Donald Trump said there could be a "devastating number of deaths," as Secretary of State Marco Rubio added that the U.S. is deploying rescue teams to Venezuela to help search for victims.
At one point, more than 25,000 people were unaccounted for, officials said.
During the earthquakes, people ran from swaying buildings in Caracas, many visibly shocked when they turned back to see destroyed walls that left furniture visible from the street.
"It's like a horror movie," one frantic woman who escaped her damaged building said.
One Caracas resident, Armando Nori, posted a video on social media from inside an apartment building that began to shake violently during the earthquakes. The footage showed Nori and others in the building fleeing as walls and shelves collapsed, and items, including what appeared to be a water container, crashing to the floor.
Another Caracas resident, Gabriel Higuera, told ABC News that he lives on the top floor of an apartment building with his girlfriend, and described their harrowing race to escape. He said his girlfriend almost fell from one of the floors due to the violent tremors.