I can't go anywhere without looking for Survey Marks 🤣 I found 38 survey marks on my week-long vacation to Yosemite, read on to learn more!

Survey Mark hunting on a Volcano 💥Obsidian Butte was a cool pile of rocks with a pre-historic history, + lots of marks found along the way!

What started off as a routine Drive-By Recovery, turned into a 3-week survey mark recovery project and a lesson in Flood Plain mapping!

Total Marks Recovered: 7 Discs Recovered: 5 Non-Disc Type Recovered: 2 (1 New) New Agencies: 3 Notes: New Agencies Metropolitan Transit...