The Greenhouse site (16 AV 2) is an archaeological site of the Troyville-Coles Creek culture (400 to 1000 CE) in Avoyelles Parish, Louisiana. Greenhouse is the most extensively excavated Troyville-Coles Creek site in Louisiana. The site consists of seven platform mounds surrounding a central plaza that measures by . Archaeologists have not found an associated village for the site, which supports the theory that the site was ceremonial in nature and that its builders lived elsewhere. Mound A ( in height, with a base square and a summit square), Mound E ( in height, with a base square and a summit square) and Mound G are the 3 largest mounds at the site and form a triangle. See also Culture, phase, and chronological table for the Mississippi Valley References External links Reconnecting the Present to the Past:The Caddo People Return to the Lower Red River Valley:Caddo Connections to the Lower Mississippi Valley Archaeological coring used at Greenhouse Archaeology of Louisiana By Mark A. Rees, Ian W. (FRW) Brown THE CADDO MOUNDBUILDER'S LEGACY Time's river: archaeological syntheses from the lower Mississippi River Valley By Janet Rafferty, Evan Peacock Troyville culture Archaeological sites of the Coles Creek culture Mounds in Louisiana Geography of Avoyelles Parish, Louisiana