+scolba Posted October 28, 2007 Share Posted October 28, 2007 Hey guys, been a good long while since I posted here. The wife and I were hiking today at Matthiessen State Park near Oglesby, IL and I saw this rivet like thing in some man made structure. It was on the floor of the bluffs we were walking within along the creek bed. I couldn't find anything for it in the DB, and was hoping maybe you guys knew what it might be? thanks, as usual!! Scott Quote Link to comment
ArtMan Posted October 28, 2007 Share Posted October 28, 2007 scolba, Rivets like this are often set as benchmarks, but this one doesn't appear to be in the Geocaching database. For an explanation of why many, if not most disks and other marks used for surveying and geodesy do not appear in the Geocaching database (which itself is a snapshot of the NGS database ca. 2002), please see the section I found a benchmark, but it isn't in the database. Why? in the benchmark FAQ. -ArtMan- Quote Link to comment
+scolba Posted October 28, 2007 Author Share Posted October 28, 2007 ah, good deal. thanks! so let me ask you guys this question then....since i don't have much benchmarking experience yet, and i def haven't found any rivet type bench marks before, would you guys say this rivet is consistent with how they generally look, or is this probably some other type of mark? Quote Link to comment
Bill93 Posted October 28, 2007 Share Posted October 28, 2007 All rivets may not all look exactly like this, but your picture is consistent with an elevation mark set and used by someone. Is this a former railroad bed? Many railroads used monel rivets similar to your picture. Quote Link to comment
+scolba Posted October 28, 2007 Author Share Posted October 28, 2007 No railroad bed nearby....this is inside of a state park. Some other images of the nearby area to give you a better idea of what the rest of the trail is like. not totally relevant, but its fun to share, too. Quote Link to comment
Papa-Bear-NYC Posted October 28, 2007 Share Posted October 28, 2007 (edited) Here's a couple of rivets for comparison. I think the greenish sheen of the first one is typical of monel. On a RR right of way: KU0903 On a culvert by a highway: KU1636 That sure is a beautiful area in the park where you were. Edited October 28, 2007 by Papa-Bear-NYC Quote Link to comment
+scolba Posted October 28, 2007 Author Share Posted October 28, 2007 hum...so not looking much like a bench mark, eh? lol...its probably just a bolt of some sort to hold down the slab so it doesn't wash away when the water gets higher. Yeah, thats a really cool area in IL. Sometimes I forget that there is more in IL than the endless corn and bean fields around me. thanks for the help guys! Quote Link to comment
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