More drawings from Eric Harris' journal, taken from the additional 946 pages of reports Jefferson County released in 2006. The first image looks to be more Doom or Quake-style drawings. The second page is more disturbing, depicting people running from an exploding building, on fire. The car near the building and the building shape itself is reminiscent of the exterior of Columbine though this may be simple coincidence.
Click on the scaled-down images below to see the full-sized scans.
Drawing from Eric Harris' notebook
Another of Eric Harris' drawings from his journal