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This Lease Expiration map should be compared to identical lands shown in a Lessee Ownership map (click here to open in new page.) The exact same dataset created both maps. Note the red-dashed outlines showing possible expired leases and how colors change from warm to cool tones depending on expiration date. Also note how other elements such as text labels, potential drill site, and Federal Stipulation or Environmental outlines do not change between the two maps.