Costing under $10,000, the GeoWall was developed as a low-cost version of room-format displays (Johnson et al. 2006). The Geo Wall is becoming popular in geology; Johnson et al. indicate that "more than one-third of undergraduate nonmajor Earth science students in the US already use a GeoWall in their coursework" (p. 12). Although the GeoWall is not yet common in geography, researchers at the University of Minnesota and the University of Kansas have promoted its potential (Anthamatten and Ziegler 2006; Slocum et al. 2007). One disadvantage of the GeoWall is that in its basic form, resolution is limited;for example, a typical resolution is 1,024 x 768 pixels. To address this issue, Johnson and his colleagues developed the Geo Wall-2, which uses an array of LCD panels powered by several high-end P for display (Figure 25.4). The result is an inexpensive solution for creating a high-resolution wall-sized display, albeit without stereo capability.