Drive an hour east on Interstate 8 from San Diego toward El Centro and you won't fail to be impressed by the enormous stacks of rounded boulders thrusting skyward over the high-desert landscape. How did …
February 22, 2001
Posted September 13, 2011
Drive an hour east on Interstate 8 from San Diego toward El Centro and you won't fail to be impressed by the enormous stacks of rounded boulders thrusting skyward over the high-desert landscape. How did …