From Library of Congress:
Title: Seven Pines, Va. Twin houses on battlefield, with 32-pdr. field howitzer in foreground.
(Note — the title description of the artillery piece is likely wrong. Please see first comment below.)
June 1862
Photographer: George N. Barnard
Photograph from the main eastern theater of war, the Peninsular Campaign
Civil War glass negative collection. Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA
Record page for this image: http://www.loc.gov/pictures/item/cwp2003000069/PP/