Scottsdale and Phoenix each acquired hundreds of acres of state trust land Tuesday in separate auctions that generated more than $16 million for the Arizona State Land Department.

Scottsdale was unopposed in its $6.5 million bid for 400 acres southeast of Pinnacle Peak and Alma School roads.

Phoenix was the lone bidder at $9.56 million for 295 acres southwest of the road alignments of Dove Valley Road and Seventh Street. The city plans to add the land to its Sonoran Preserve.