Rearview. Did it all by brush. Airbrush would be much quicker but I'm making a tutorial for painting larger terrain pieces for people who don't have and are unwilling or unable to invest into an airbrush set up.

Btw for fellow terrain bros, Vallejo makes 500 ml bottles of varnish. It's a water based polyurethane, like GWs. Very durable. Only thing is you want to keep things finished with it out of UV light because that can yellow polyurethane varnishes. There are also products that can be coated over it to mitigate that issue though.