hornitos or carlitos

Tiny hornitos, or "carlitos". Note thin glass filaments and points, formed by chilling of gassy lava spit from skylight. Discoloring is from sulfur and other minerals deposited by gas, as well as minerals formed by chemical alteration of glass by hot vapor. Carlitos form in dangerous areas, where roof on lava tube is thin. Solitary glove reminds us of this danger.