FILMING GUIDELINES Trail / Tour 40-minute stairs and platform viewing taking visitors down 122 steps to a depth of 70 feet, then back up those same steps which twist around the cavern walls. Narrow in some places. Availability Every day, year round. Call or email us using the contact information to the left . Equipment Handheld cameras fine. Good walking shoes recommended for traction. Environment Wet - some stairs and handrails may be slippery. Temperature is a constant 58°F with 90% to 105% humidity. Lighting Cave is lit for walking tours, but additional lighting is recommended for picking up more detail. Suggested Interior Shots Helictite crystals for which cave was named a National Natural Landmark Look down from the platform in the Colossal Room to the blue lakes 100 feet below. (Naturally occuring calcium bicarbonate makes the lakes a brilliant blue.) From second platform look back up stairs to spectacular view of large variety of formations Suggested Exterior Shots • Trail down to cave entrance and cave entrance. • Nature trail, especially “Zen Garden.” Permits Required None - privately owned property.