I created a list for this new activity.

EcoScavenger Email Group
Similar to letterboxing and geocaching without hiding anything.
http://groups.yahoo.com/group/ecoscavenger/

Thanks for the interest! Those of you who have responded directly to
me, help me get it going by creating some EcoScavenges. I look
forward to posting them!

Since they can be just about anything significant and worth visiting,
think of all those urban sights. Those are generally untapped by (and
different than) letterbox/geocache locations.

I'm currently converting one of my letterboxes to an ecoscavenge.
Unfortunately, I moved and all them are out of state so it's a little
difficult.

Karen