Grand Caverns, formerly known as Weyer's Cave, is located in the central Shenandoah Valley in the town of Grottoes, Virginia, United States.

Once, Confederate General Stonewall Jackson was apparently camped near Port Republic and allowed his soldiers to visit the caverns.

[4] From 1974 until October 2009 Grand Caverns was owned by the Upper Valley Regional Park Authority (UVRPA); they also claimed ownership of Natural Chimneys.

In 2004, the Grand Caverns management requested that the Virginia Region chapter of the National Speleological Society conduct a re-survey of the cave system which had not been done since the 1930s.

[5] The newly discovered portion of cave (closed to the public) is highly decorated with many forms of speleothems, including the celebrated shields.

Other activities in the park include hiking and biking trails, five picnic shelters for general use, a swimming pool, and a mini-golf course.