LOCALU.S. Sen. Martin Heinrich tours Carlsbad Caverns above and underground Adrian HeddenCarlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-ArgusU.S. Sen. Martin Heinrich (D-NM) tours Carlsbad Caverns National Park, July 6.Adrian Hedden | Carlsbad Current-Argus