this post was submitted on 24 Jun 2024
40 points (95.5% liked)
pics
19628 readers
158 users here now
Rules:
1.. Please mark original photos with [OC] in the title if you're the photographer
2..Pictures containing a politician from any country or planet are prohibited, this is a community voted on rule.
3.. Image must be a photograph, no AI or digital art.
4.. No NSFW/Cosplay/Spam/Trolling images.
5.. Be civil. No racism or bigotry.
Photo of the Week Rule(s):
1.. On Fridays, the most upvoted original, marked [OC], photo posted between Friday and Thursday will be the next week's banner and featured photo.
2.. The weekly photos will be saved for an end of the year run off.
Instance-wide rules always apply. https://mastodon.world/about
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
It might be some sort of survey benchmark. If there's one on each end of the bridge, it could be for measuring alignment of the movable section against the stationary section
Sounds about right. I have seen similar markers in California to measure fault line movement on an annual basis, as well as several in Yellowstone for roughly similar reasons. Seems like this is a survey marker to measure distance or alignment.