After modifications further trials were made on 23 and 29 June, and on 1 July a spectacular 12 cross-country flight was made during which it was flown over Switzerland to Zürich and then back to Lake Constance, covering 386 m (240 mi) and reaching an altitude of 795 m (2,600 ft).
Zeppelin LZ 4, a German experimental airship built in the early 1900s