11.   In recent years, the Islamic Trust, or Waqf, has carried out a number of renovations, turning underground vaults into prayer areas.

12.   Jerusalem city inspectors Thursday visited the site of the new mosque, an underground vault near the Al Aqsa Mosque.

13.   Jerusalem city inspectors on Thursday visited the site of the new mosque, an underground vault near the Al Aqsa Mosque.

14.   Tabish knew where to go because authorities say he built the underground vault.

15.   The guarded compound near Moscow has six-story temperature-controlled buildings and nearly two dozen tunnels connecting underground vaults.

16.   The public will come to know these and other ancient geological gems hidden in four naturally formed underground vaults when Kartchner Caverns State Park opens in November.

17.   Works kept in an underground vault are now being publicly displayed as the museum boosts ties with the outside world, Kalantari said.