His shirt is rumpled. His fingers, long and slender, are stained yellow at the tips from smoking. His mind is always on something else. My mind is busy, too, reading every cue and signal, keeping track of all the things that cannot be discussed, that must not be remembered, that have to be erased.

The body is an organ of memory, holding traces of all our experiences. The land, too, carries the burden of all its changes. To truly see and understand a landscape is to see its depth as well as its smooth surfaces, its beauty and its scars.

I have always loved the many moods of the sky at Rocky Flats. Turquoise and teal in summer, fiery red at sunset, iron gray when snow is on the way. The land rolls in waves of tall prairie grass bowed to the wind, or sprawling mantles of white frosted with a thin sheath of ice in winter.