This is interesting, found in the parks newsletter.
http://www.nps.gov/shen/planyourvisit/loader.cfm?csModule=security/getfile&PageID=265723
Firearms Permitted in Shenandoah
As of February 22, 2010, a new federal law allows people who can legally possess
firearms under federal, Commonwealth of Virginia, and local laws to possess
firearms in Shenandoah National Park.
It is the visitor’s responsibility to understand and comply with all applicable state,
local, and federal firearms laws. Federal law prohibits firearms in certain facilities in
this park; those places are posted with signs at public entrances. If you have questions,
please contact the park at (540) 999-3500.
The new law only affects the possession of firearms. Other weapons, such as
bows, slingshots, and compressed gas or spring-powered pistols and rifles are still
prohibited. Also, there is no change in the regulations prohibiting the use of
firearms, hunting, or transporting legally taken wildlife through the park.