Down by the dam, as you might never have seen it before — PHOTOS Las Vegas Review-Journal 9 years ago Members of Nuestro Rio, a Latino Colorado River conservation group, tour the roof of the central section of the Hoover Dam near Boulder City Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The roof of the central section of the Hoover Dam near Boulder City Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam near Boulder City is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Nevada power house of the Hoover Dam near Boulder City is seen during a tour on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam near Boulder City is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam near Boulder City is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco People tour the Winged Figures of the Republic at the Hoover Dam near Boulder City Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Nevada power house of the Hoover Dam near Boulder City is seen during a tour on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam near Boulder City is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco Hector Lizaola, member of Nuestro Rio, a Latino Colorado River conservation group, tours the roof the central section of the Hoover Dam near Boulder City Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam near Boulder City is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco Arnold Placencia-Flores, from left, Hector Lizaola, and Rosalia Salazar, members of Nuestro Rio, a Latino Colorado River conservation group, tour the Hoover Dam on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco Members of Nuestro Rio, a Latino Colorado River conservation group, tours the roof the central section of the Hoover Dam on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco A penstock is seen from inside the construction adit of the Hoover Dam during a tour on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco Mike Connor, Deputy Secretary of the U.S. Department of the Interior, right, listens during a tour of the Hoover Dam on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco Members of Nuestro Rio, a Latino Colorado River conservation group, tour inside the Nevada power house of the Hoover Dam on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco Rob Skordas, area manager for the Lower Colorado Dams Office, gives a tour of the Hoover Dam on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco The Hoover Dam is seen on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco Mike Connor, Deputy Secretary of the U.S. Department of the Interior, speaks during a tour of the Hoover Dam on Thursday, Dec. 17, 2015. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco A Latino Colorado River conservation group toured Hoover Dam on Thursday, and they got some views that are not seen every day.