Indonesian tourists take a selfie as Mount Bromo spews volcanic material and ash into the air during an eruption in Probolinggo, East Java, Indonesia, 31 December 2015. Indonesia's Mount Bromo is on the second highest alert level as its activity has increased in the last two months. (Photo by Fully Handoko/EPA)

An aircraft passes over houses at it lands at Heathrow Airport near London, Britain, December 11, 2015. Picture taken December 11, 2015. (Photo by Neil Hall/Reuters)

Members of the media film as a ranger performs a post mortem on the carcass of a rhino after it was killed for its horn by poachers at the Kruger national park in Mpumalanga province August 27, 2014. Rhino poachers in South Africa now risk giving themselves away when they shoot thanks to a high-tech, gunfire-detection system being piloted in the country's flagship Kruger National Park. The stakes are high, for rhinos are being slain in escalating numbers for their prized horns, alarming both conservationists and the government since wildlife in South Africa is an important tourist draw. (Photo by Siphiwe Sibeko/Reuters)

A woman stands on the footbridge over the river Garry near Pitlochry, Scotland, Britain on October 10, 2018. (Photo by Russell Cheyne/Reuters)

Models perform during a Muslim fashion show an airport train in Jakarta, Indonesia on Thursday, May 2, 2019. The fashion show was held to great to upcoming fasting month of Ramadan, the holiest month in Muslim calendar. (Photo by Tatan Syuflana/AP Photo)

Garrison Ireland Leigon member John O'Dwyer dressed as the character Darth Vader looks out towards Skellig Michael island on May 4, 2019 in Portmagee, Ireland. The latest Star Wars movies such as The Last Jedi have featured the famous Skellig Michael islands situated off the coast of the small Irish fishing village. The May the Fourth Star Wars festival is taking place in the small County Kerry village for the second year running as millions of fans worldwide celebrate the science fiction series. The quiet costal setting has seen a sharp rise in the number of tourists and fans visiting the area. (Photo by Charles McQuillan/Getty Images)

Dania Ramirez attends the premiere of 20th Century Fox's “Dark Phoenix” at TCL Chinese Theatre on June 04, 2019 in Hollywood, California. (Photo by Matt Winkelmeyer/Getty Images)

A bus goes through a flooded street in Wuhan, Hubei province, China July 6, 2016. (Photo by Reuters/China Daily)