Cacnha nghien cuu  trong mot chiec truc thang duoc trang bi dac biet daoqua dao lai tren vung nui Moccasin o gan vung Coral Pink Sand Dunes,bang Utah, My, chup cac buc anh  ve nhung dau chan hoa thach rai rac tren mat da cat do o day.

Hang chuc nghin dau chan cua it nhat 6 loai khunglong - mot so co 3 ngon, so khac 5 ngon - de lai tren vung dat naykhoang 180 trieu nam truoc.

Day la lan dau tien truc thang duoc dung vao viecnay. Mot chiec camera, co the chup chi tiet den 1 centimet, se giup cacnha khoa hoc  co cai nhin tinh tuong nhu cua chim ung ve cac dau chantren khu vuc  rong khoang 1,2 hecta nay.

Cac buc anh  se duoc su dung de tao ra hinh anh  3chieu va duong di  cua cac dau chan, nho the cac nha khoa hoc  se hieu rohon ve hanh vi cua khung long. Chung cung co the duoc dung de trung baycho khach tham quan.

Chuong trinh do Trung tam  hoat dong  quoc gia  BLM o Colorado thuc hien

Ban co y kien gi ve bai viet Theo dau khung long tu tren... may bay nay? Hay goi suy nghi, binh luan, danh gia, loi khuyen ... cua ban ve bai viet Theo dau khung long tu tren... may bay ban tai day.