Apart from the metaphorical ones, sometimes actual #fossils are in the way of building #TransmissionLines:

"The #GreenlinkWest project would build a 470-mile-long transmission line bringing clean electricity north of Las Vegas to Reno in #Nevada, but it cuts through an area containing everything from woolly mammoth tusks to giant sloths to ancient camels."

(You can now use ultrasound to explore for these large fossils; could do that during the trajectory planning).

https://www.theguardian.com/environment/2023/may/22/america-green-energy-obstacles-fossils