Why not carry 600 lbs of gold bars out into the forest and bury them, then hope nobody thought it was suspicious to see someone carrying a shovel into the forest on any one of the trips necessary to do it?
Do you ever debate with intellectual honesty?
Nobody aside from you said “carry”.
A small plot of forested rural land without utility service doesn't cost much at all. Go car camping at your new private getaway for a few days. This isn't rocket science.
Also if you drive out to a remote part of the US who is going to see you? There are some very empty places in this country. Not quite on the level of Canada or Russia but still.