When one is in the part of Bogota where buildings crowd the skies, it is good to be able to look east above and between and see the high, green side of a mountain. You look up an see a plunging meadow, sunlit and with all the bushes and trees distinct. It is the clarity that is sometimes most astonishing: you can see eucalyptus against the sky, pines marching in humbler ranks along the ridge, and you get a sense of the texture of the grass even though you can’t really observe it. Very close it seems, and so close to the sky.