Originally Posted By Castle616

My in-laws own a gravel/sand pit. Does that count as natural?

I would say as long as the sand was always there, and not deposited, it should be good, right? I know there are a lot of sand trails in the Milford area that were used for 4X4 testing by the auto companies.
'Alfonso' and 'Isabella'
Twin 2008 Crown Victoria Police Interceptors
Former Sheriff's Department, Isabella County, Michigan

Inventor of the Blakat Grit Guard, Blakat Funnel, $1 Blakat Trunk Fix, Blakat Jack Mount, Cop Chip, and 'Whackerphobe', and winner of 31 Picture Challenges. nana