![Robbers Cave lies under this area in southwest Lincoln. The entrance is through the now-closed brew pub and center bottom. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_373.jpg)
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![A face of a ghoul is among thousands of names carved on the sandstone walls. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_364.jpg)
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![A face of a ghoul is among thousands of names carved on the sandstone walls. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_347.jpg)
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![Names and drawings fill the walls of the cave. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_324.jpg)
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![An eye watches visitors where two of the main tunnels intersect. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_313.jpg)
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![Names and drawings fill the walls of the cave. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_298.jpg)
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![From left: Yijun Liao, Professor Ricky Wood and Dylan Downes carry their equipment through the cave after a mapping demonstration. The engineering professor uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_296.jpg)
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![Dylan Downes, a sophomore in civil engineering from Lincoln, carries the tripod through a passage after mapping part of the cave. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_191.jpg)
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![From upper left: Yijun Liao, Professor Ricky Wood and Dylan Downes raise a LIDAR unit to produce a 3-D map of the inside of Robbers Cave and the names etched into the walls. The local sandstone cave has spun legends from use by native Americans, Jesse James and the Underground Railroad to being Lincoln's first brewery. Over the years, thousands of people has etched their names into its walls. Wood is an expert in using LIDAR to map buildings destroyed by natural disasters and was approached by the state historical society to map the cave since the soft sandstone is slowly degrading. LIDAR, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the form of a pulsed laser to measure ranges. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_179.jpg)
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![Dylan Downes, a sophomore in civil engineering from Lincoln, sets up the LIDAR in the well area of the cave. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_062.jpg)
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![A passage through Robbers Cave. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_039.jpg)
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![An air vent is carved into the ceiling of the cave. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_029.jpg)
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![Professor Ricky Wood and PhD student Yijun Liao look over carvings in a side passage that connects to an air vent above their heads. The engineering professor uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_022.jpg)
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![A rendering of the Sphinx is among thousands of names carved on the sandstone walls. Professor Ricky Wood uses LIDAR to digitally map Robbers Cave in Lincoln. November 22, 2019. Photo by Craig Chandler / University Communication.](styles/square_thumbnail/public/photos/191122_Robbers_Cave_006.jpg)
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