In this artwork, how is the Physical description discussed?
The piece consists of twelve dark limestone obelisks with cylindrical boreholes aligned with one another, adjacent to and following the path of the 1-kilometer baseline starting at the Lake Washington shoreline at 47°40′26.20299″N 122°15′06.20661″W, and ending at the park's northern edge  47°40′59.73768″N 122°15′16.62911″W.
baseline Lake Washington