In 1930, a small team of men led British explorer Bertram Thomas on what became the first recorded crossing of Rub' al Khali, or "The Empty Quarter", the largest sand desert in the world.
For the first time since then, another team has taken on the same challenge with British explorer Mark Evans leading the charge across the fascinating yet dangerous landscape.
Their journey began in December, and as they scale more than 600 miles across the southern portion of the Arabian Peninsula (in Oman, Qatar, and through Saudi Arabia), they've recorded their journey on their "Crossing The Empty Quarter" website and social media accounts.
We've put together a collection of photographs from the @crossingeq Instagram account that show what the perilous journey has been like for the group so far.
DON'T FORGET: Follow Business Insider's lifestyle page on Facebook!
To stay in touch throughout their trip, the team is using satellite equipment from Thuraya Telecommunications. Pictured here is the SatSleeve, which turns smartphones into a satellite phone, and a communications hub (far right) to facilitate getting Wi-Fi.
Photo by @simdavisphoto
Temperatures in the desert can climb as high as 122 degrees Fahrenheit in the summer and below freezing in the winter. Luckily, the team has two Toyota LC90 expedition vehicles for their journey.
They also have a few expedition camels accompanying them on the trip.
See the rest of the story at Business Insider