This bright orange lichen grows all over the old stones on the main island of São Miguel, as well as on some trees. It made driving a bit easier where it grew near roads like high visibility paint.
Unfortunately I didn't take any closeups. After some searching I think this was probably xanthoria. It was dry, flakey, and had those fairy cup fruiting bodies. Not so obvious in any of my pics.
Here is the other I took.
