This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
NTS Gun Turret . Calibration Gun Turret located on Road behind Bunker in Area of the Nevada Test Site This gun turret was removed from pres scrapped Navy Heavy Cruiser It was developed by Lawrence Livermore Radiation Laboratory for lineofsight diagnostics Basically the turret could be used on multiple atmospheric nuclear tests