The layered effect

“Excavation’’ (integrated medica collage), by Brewster, Mass.-based artist Mary Doering, in the 20-artist group show “What Lies Beneath,’’ at Bromfield Gallery, Boston, through Aug. 18.

The gallery says the exhibition explores what lies under layers.

An example of 17th Century vernacular architecture in Brewster, Dillingham House (c. 1660)