Yea, I don't know how you do an upside down "!" so, you get the point. Nonetheless, watch this.
Great stuff from David A, a really interesting outdoor video! It doesn't look like a homemade spot, but honestly half the fun in fingerboarding outside is finding some really great spots to do it. This looks simple, yet with a ramp it turns into something really fun.
Go check David's channel here :)