(2,229 ft/679 m). Beware of headache rock when entering and exiting the cave via the ladder. The downstream portion of this cave (heading north) is the easier route but still requires some stooping. The back section where the Golden Dome is located is a figure-8; take note of your location so you don't go around in circles. The golden ceiling in this and many other Lava Beds caves is the result of light reflecting off water droplets that bead up on a coating of hydrophobic bacteria. The bacteria are not harmful to humans but are protected, so please do not touch. The upstream portions of this cave are more difficult and require more stooping and some crawling.