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Drift,
A 400 lb rock isn't too big. What are you really doing on this slope? how wide and tall is the area? What type of soil? What is the runoff area ?
Is there anything you could put there that will withstand an earthquake?
Do you have pictures of the area?
__________________
Nick
"Every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving" Albert Einstein
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