https://c8.alamy.com/comp/2JD6HER/a-german-zeppelins-observation-car-photographed-on-display-as-part-of-a-public-exhibition-of-dirigible-wreckage-collected-from-across-britain-the-aluminium-observation-car-was-suspended-from-wires-beneath-its-zeppelin-and-the-two-linked-by-a-telephone-wire-enabling-the-crew-to-view-the-ground-whilst-keeping-the-airship-itself-hidden-at-a-great-height-colourised-version-of-10219687-date-1916-2JD6HER.jpg