How do I get a 300mbit connection half a mile down a hill?

I'm working with someone who has a fiber connection at the top of a hill and need to bring that connection 3400feet to another building at the bottom of a hill. They own the entire hill and the path is forest, so there aren't really any issues with approval or regulation. I was considering point-to-point ethernet over metal clad fiber optic cable. Point-to-point WiFi isn't an option due to dense foliage and the second building existing in a crevice. Is this the most reliable and cost effective option?

​

Thanks!