Blue lava - yeah right! The thought of it sounds so surreal that many people shun the idea that it actually exists in nature. Well, good thing some photographers took the risk of visiting an Indonesian volcano named Kawah Ijen just to capture the rare sighting of blue lava flowing from the mouth of the volcano during nighttime.

According to HuffingtonPost, the otherworldly sighting is all thanks to the volcano's high pure sulfur content, which when emitted creates an icy violet color as it burns.

Although the beautiful view seems to be very alluring and inviting, photographers are actually pitted against a literally intense situation given that when the blue lava flows the rocky slopes turn very hot with temperature reaching at least 239 degrees Fahrenheit. What's more is that the entire environment becomes highly toxic.

Despite all the aforesaid dangers and perils this wonderful blue lava brings, one brave photographer named Olivier Grunewald took the risk just to capture the rare sighting at night.

Reports say Grunewald was not alone in his endeavor as a group of men, who toil on the volcano at night also joined him. The miners, on the other hand, were aiming to mine sulfur from the crater in spite of the noxious gases. They carry whatever they can by hand.

Yahoo! News reports that these miners carry up to 176 to 220 pounds of sulfur chunks per trip. They then sell the chunks for about 2.5 cents per pound. Most of them get an average of two loads every 24 hours to double their income on a daily basis.

Blue lava has become a hot topic on the Internet at the start of 2014 because of Grunewald's documentary about it. Together with Régis Etienne, the president of Geneva's Society of Volcanology, Grunewald produced a documentary that features his best photographs and raw footages of the surreal blue hot lava flowing out of the Indonesian volcano.