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Hi everyone! Hoping you can help me with a mystery. We've lived in our house for 5 years now, but with nothing else to do considering this pandemic, we've been exploring our front stone path a LOT more closely than we did before (especially considering 5 year old daughter's interest in fossils). We have noticed three trilobites (don't know how I missed these in the past - they are clear as daylight) and a couple other interesting things (maybe bryozoans, coral or echinoderms - I admit i can't tell them apart well). All of these new discoveries have me REALLY wondering now about something big that i have been wondering about for 5 years - the very last picture. I previously thought it was man-made - maybe result of some rebar or something, but now with these other discoveries, i'm really wondering. Anyone have any ideas for us? Thank you! We live in Northwest Indiana. That may or may not say anything at all about where the stone was sourced. I suspect it's limestone? But I really don't know for sure. We do have a giant quarry nearby (Thornton Quarry - fossil-rich limestone and on my bucket list to get a tour there one day). But really, this stone could be from anywhere. Lastly, each of these fossils (or mineralizations, or whatever they are) is in a different piece of stone. Anyway - here are the pictures - seven "fossils" and one of the path so you can see what we're dealing with. Thank you again!