A display system for an aircraft, comprising: a first data source configured to provide low resolution terrain data; a second data source configured to provide high resolution terrain data; a processing unit coupled to the first data source and the second data source, the processing unit configured to receive the low resolution terrain data and high resolution terrain data, to integrate the low resolution terrain data and the high resolution terrain data into a common three-dimensional view that comprises graphical elements representing both the low resolution terrain data and the high resolution terrain data, and to supply display commands associated with the low resolution terrain data and the high resolution terrain data; and a display device coupled to the processing unit and configured to receive the display commands and operable to render the common three-dimensional view to thereby allow simultaneous viewing of the low resolution terrain data and the high resolution terrain data, wherein the common three-dimensional view has a field of view that is the synthetic terrain that surrounds the aircraft as viewed from the cockpit or other vantage point, and wherein the processing device is configured to compare bounding boxes of the high resolution terrain data, which correspond to the geographical extent of the data, from the second data source 110 to the boundaries of the FOV to determine if the high resolution terrain data in the second data source includes high resolution terrain data associated with the FOV, wherein the processing device is further configured to remove the low resolution terrain data corresponding to the high resolution terrain data associated with the FOV from the common three-dimensional view, to patch the high resolution terrain data associated with the FOV into the common three-dimensional view, and to blend a boundary between the low resolution terrain data and the high resolution terrain data associated with the FOV in the common three-dimensional view. a first data source configured to provide low resolution terrain data; a second data source configured to provide high resolution terrain data; a processing unit coupled to the first data source and the second data source, the processing unit configured to receive the low resolution terrain data and high resolution terrain data, to integrate the low resolution terrain data and the high resolution terrain data into a common three-dimensional view that comprises graphical elements representing both the low resolution terrain data and the high resolution terrain data, and to supply display commands associated with the low resolution terrain data and the high resolution terrain data; and a display device coupled to the processing unit and configured to receive the display commands and operable to render the common three-dimensional view to thereby allow simultaneous viewing of the low resolution terrain data and the high resolution terrain data, wherein the common three-dimensional view has a field of view that is the synthetic terrain that surrounds the aircraft as viewed from the cockpit or other vantage point, and wherein the processing device is configured to compare bounding boxes of the high resolution terrain data, which correspond to the geographical extent of the data, from the second data source 110 to the boundaries of the FOV to determine if the high resolution terrain data in the second data source includes high resolution terrain data associated with the FOV, wherein the processing device is further configured to remove the low resolution terrain data corresponding to the high resolution terrain data associated with the FOV from the common three-dimensional view, to patch the high resolution terrain data associated with the FOV into the common three-dimensional view, and to blend a boundary between the low resolution terrain data and the high resolution terrain data associated with the FOV in the common three-dimensional view.