Located in East Java, Indonesia, Kawah Ijen is a volcano is home to the largest acidic crater lake in the world. What turns the waters of the lake in the 1 km caldera its beautiful turquoise color are the highly sulfuric gases emitted from the volcano underneath.

Smithfield meat porters march on the Home Office, bearing a petition which calls for an end to all immigration into Britain, 25th August 1972. (Photo by Keystone/Hulton Archive/Getty Images)

Emergency crews battle a running wildfire on April 19, 2011 in Strawn, Texas. Dozens of area homes have been destroyed in the wildfires that have been fueled by dry conditions, high winds, and low humidity. (Photo by Tom Pennington/Getty Images)

Retired 90 year old Frank Foss of St. Petersburg, Florida, with his home made banjo, made from a frying pan, a length of wood and some strings. (Photo by Fox Photos/Getty Images). 2nd July 1972

Vivian Odhiambo, 24, frys samosas in the trading centre of Kogelo, west of Kenya's capital Nairobi, July 14, 2015. Odhiambo said, “Obama is our hero and we wait to welcome him back home again. We in Kogelo have witnessed general growth and we are proud of being associated with the Obamas”, she added. As U.S. President Barack Obama visits Kenya, a personal connection to his father's birthplace of Kogelo dominates a trip that Kenyans view as a native son returning home. Residents from a herdsman to a housewife share their views on what Obama has achieved and what they would like to see next. (Photo by Thomas Mukoya/Reuters)

Communist supporters hold portraits of Soviet leader Josef Stalin as they queue to lay flowers at the grave of Stalin to mark the 139th anniversary of his birth, in Moscow's Red Square, Russia, Friday, December 21, 2018. (Photo by Pavel Golovkin/AP Photo)

“Amy Jade Winehouse (14 September 1983 – 23 July 2011) was a British singer-songwriter known for her powerful contralto vocals and her eclectic mix of musical genres including R&B, soul and jazz. ... Winehouse died at the age of 27 on 23 July 2011 at her home in London; police have said that the cause of her death was «as yet unexplained»”. – Wikipedia

Photo: Amy Winehouse vigil outside Amy Winehouse's North London home on July 23, 2011 in London, England. Singer Winehouse, 27, was found dead today. (Photo by Sylvia Linares/Getty Images)

A woman carries an idol of Hindu god Ganesh to her home on the first day of the ten-day-long Ganesh Chaturthi festival, amid the coronavirus disease (COVID-19) outbreak, in Mumbai, India on August 22, 2020. (Photo by Hemanshi Kamani/Reuters)