Eyes on the Land
By Paul Weideman Messing with the matrix. That’s one of the problems with the modern-day fad of stacking stones into cairns in wilderness areas. Cairns are an age-old method of marking trails, but those that are constructed for less serious reasons at archaeological sites can cause irreparable damage. “If there were associated grid gardens or shallow subsurface deposits, the rock removal would likely disturb them, compromising the shallow subsurface stratigraphy,” says Jessica Badner.