Who is interested?
https://www.nps.gov/seki/planyourvisit/crystal-cave.htm
Starting 10/20, buy tickets only in the park at Lodgepole or Foothills visitor centers (not at the cave). Allow for wait times at park entrances, especially on holiday weekends. Crystal Cave Road is 15 miles from Sequoia Park’s entrance at Hwy 198; 3 miles south of Sherman Tree (map, page 8). Maximum vehicle length on this narrow, winding road is 22’. Use parking-lot restrooms; the cave has none. Wear sturdy shoes; the 1⁄2-mile trail to the cave is steep. Wear a jacket; it’s 50°F (10°C) inside. No bags/packs of any kind, strollers, or tripods; no flash/lighted photography/video. Not wheelchair accessible. Tours times subject to change. For school tours & groups larger than 21, visit www.explorecrystalcave.com. Tours operated by the Sequoia Parks Conservancy (SPC).
Family Cave Tour – Daily, 50 minutes. Oct. 20 – November 27 · Thursday-Friday: 12 noon, 1pm, 2pm · Saturday & Sunday: 11am, 12 noon, 1pm, 2pm · Fees: Ages 0-5 $5; 6-12 $8; 13-61 $16; 62 & up $15. National Park & Interagency passes do not apply.
SOUNDS COOL!!!!!!
Looks like there are other longer tours too for families with older kids (12+). Some kids only (age 10-15) with climbing involved.
http://www.explorecrystalcave.com/tour-details–prices.html