its heritage coast is around 35 miles (56 km) long, stretching from staithes to flamborough. at whitby, dinosaur footprints are visible on the beach. the black mineral jet is found in the cliffs and on the moors and has been used since the bronze age to make beads. in victorian times jet was brought to whitby by pack pony to be made into decorative items. it was most popular in the mid-19th century when it was chosen for mourning jewellery by queen victoria after the death of prince albert.