The USS Shenandoah, ZR-1, was a rigid airship commissioned by the US Navy on October 19, 1923.  A rigid airship, the Shenandoah was used to test the practicality of helium replacing hydrogen to provide "lift" to lighter than air aircraft.  The Shenandoah was in service for about two years until it crashed in Ava, Ohio on September 3, 1925 in the middle of a violent thunderstorm.  The following pictures show the USS Shenandoah monuments in the various places where the airship's wreckage fell to the earth.

This official Ohio Historical Marker appears at the rest area on I-77 southbound, approximately 15 miles south of Cambridge, Ohio.  About seven miles south of this marker, the major piece of the USS Shenandoah crashed beside what is now I-77's right of way.  (A small sign and flagpole appear at the actual site, but there is nowhere to pull off and take a picture.)

In the small hamlet of Ava, a large monument to the USS Shenandoah and its lost crewmembers sits beside a country highway in silent testimony to their heroism as their ship broke apart in the thunderstorm.

Closer inspection of a the memorial shows an airship in flight depicted in bronze.

Some miles away is a third crash site where the remaining part of the airship reached the earth with survivors on board.

A memorial stone with very fine line engraving appears across the driveway from this sign.

Some excellent histories and additional photos of the USS Shenandoah appear on these fine web sites: