I've collected tektites (bulalakaw?) from the saudi desert, 4 as big as an orange (pomelo), mga kulay brown due to the sand; old yemeni arab jewelry, old coins (before 1900); oh yes, some still unfossilized marine animal droppings (and some heart-shaped seeds which nobody could identify (?). The saudis wouldn't believe that these came from the desert. Maybe during the time of Noah?