This is a huge map from the State of California Department of Conservation, Division of Oil & Gas, Newhall, Los Angeles County with a date of 2006. Some of the items named in the legend include drilling, plugged and abandoned oil, abandoned gas storage, completed - oil, idle - gas, water source, etc. The map measures approximately 51.5" x 40.25". It has deep crease fold lines. Someone has written notations and lines on it. It has a few stains.