Buying land long distance...help

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I'm considering purchasing some rural land in another state. Other than being familiar with the area by having spent some time there, I know nothing about the current owner, zoning, or other possible issues for the area. We are talking mountain property, off the grid, definately unimproved. I'll be buying the land to simply hold...maybe someday building a small cabin on it.

Can someone offer some ideas on what to be careful of and what information to get before I make an offer ?

Also, can I work out a way to not have to be present at the closing? (it's 2,000 miles away) I'll be viewing the land next time I'm out there and may make an offer but would prefer to not have to go back to close. I understand I could give the local realtor a limited power of attorney ??...but since I do not know them that would be a bit scary.