These match the description, but after reading a different log, I realized that the actual benchmark is probably below ground, not just the post. So, I have probably just seen a cover and not the benchmark...
Are these just not findable by a layman, or what is the deal?
http://www.geocaching.com/mark/details.aspx?PID=HT1010
http://www.geocaching.com/mark/details.aspx?PID=HT1009
Thanks for your help!