Helictites are contorted depositional speleothems that grow in any direction, seemingly defying gravity. They occur in many forms, from tiny filaments to thick, antler-like forms. Helictites are formed by calcite-laden waters seeping through tiny pores in the rock. Hydrostatic pressure forces a small amount of the solution out, carbon dioxide is lost, and calcite is deposited. Growth continues through a tiny, central capillary channel, which the solution flows through via hydrostatic and capillary pressure to emerge and deposit calcite at the tip.