Oregon Caves National Monument will open its 2007 season of cave tours, ranger programs and children's activities March 23. The season runs through Nov. 27.

Monument Superintendent Craig Ackerman said the opening coincides with Oregon schools' spring break.

Tours are given:

?Through May 25: Between 10 a.m. and 4 p.m.

?May 26-June 23: 9 a.m. and 5 p.m.

?June 24-Sept. 4: 9 a.m.-6 p.m.

All 90-minute tours are on a first-come, first-served basis.

- Triplicate staff