Ad-Dahna Desert passages which can be several kilometers long. Local Bedouin have always known these caves and some were used as water supplies. They were first systematically studied in the 1981, and later explored and reported by the Saudi Geological Survey. Ad-Dahna Desert The ad-Dahna Desert is the central division of the Arabian Desert. It is a corridor of sandy terrain forming a bow-like shape that connects an-Nafud desert in the north to Rub' al-Khali desert in the south. Its length is more than 1,000 km siding Twaik Mountains from the east and does not exceed 80 km in width. It is
Mystery of the Desert Giant end, the boys discover that Grafton's fellow explorer had a part in the gang of criminal's racket. With this, Grafton is rescued, and the thugs who apparently were smuggling illegal checks across the country are caught. Mystery of the Desert Giant Mystery of the Desert Giant is Volume 40 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by James Buechler in 1961. The Hardy Boys and Chet Morton search on the California desert for missing industrialist, Willard Grafton, and break up a gang of criminals intent on