American steel rocks. Steel rocks? I grew up with American, Canadian and Greenland granite rocks. Boston. The land completely shaped by the rock carrying glaciers of the ice age. Granite dropping over the entire countryside in all sizes from sand to small houses. (New England stone walls - the way to move the cleared rocks the shortest distance.)

And back to steel rocks. My Peter Mooney; probably mostly 531, a Trek 1983(?) 4something; possibly built in Japan; I got the frame without decals, and steel forks for my two TiCycles bikes; at least one 531. (The TiCycles diamonds are from that other ore. So rocks also.)

Bike rock, So do rock bikes.