Najran, Saudi Arabia, played host to an invasion of nightmarish proportions when millions of swarming locusts descended over the weekend.

Video footage shot by locals shows the massive plague of insects darkening the skies as they make their way to their next destination of destruction. Several videos shared online since Sunday shows the scale of the infestation which has taken over countries on either side of the Red Sea.

Earlier this year, the United Nations warned that swarms of locusts would be bearing down on Saudi Arabia and spreading along the Red Sea thanks to unusually heavy rainfall. It called on all countries in the flight path to start taking the necessary precautions to limit the insects’ impact.

جراد بلكريككل يابو يمن يهناك pic.twitter.com/kkEGwk6LHE — فارس اليمني (@1v3xEaCmb5irNdA) April 29, 2019

Locust swarms contain up to 80 million insects per square mile and they can extend for hundreds of square miles. A ‘very small’ swarm of locusts, weighing about one ton, can eat the same amount of food in one day as 35,000 people.

READ MORE: Biblical prophecy? Red Sea countries braced for plague of locusts

A plague can consume all crops, fruit and vegetation in their path, meaning devastating consequences for farmers and locals.

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