The park is a relatively safe place, but there are a few issues to be aware of. For one, when hiking through Balconies Cave or Bear Gulch Cave, bring a flashlight; a headlamp is recommended to leave one's hands free. The caves are dark, footing is uneven, the rock may be slippery, and ceilings can be low. Avoid unnecessary noise in the cave which can be disturbing to wildlife and visitors. During the summer and early fall temperatures may exceed 100°F, making sun protection and adequate water absolute necessities. Drinking water is only available in the developed areas -- there is no water available on any of the trails. In addition, hikers should wear proper footwear to avoid slipping or twisting an ankle. Rock climbers should remain alert for rocks that may become dislodged or equipment that may be dropped onto unwary hikers below. Existing protection hardware is not maintained by the park and should be tested before using. Clean-climbing practices means removing slings, etc. after use. Be aware of advisories concerning cliff-nesting birds.

Dangers from the local flora and fauna are limited. Poison oak can cause a nasty rash; wetter areas may have thick stands of this shrub, while hotter, drier areas tend to be devoid of this noxious native species. Stay on trails to avoid encounters with this plant, and learn to recognize it ("Leaves of three, let it be"). Stinging nettle is another annoyance. Touching the plant will cause a burning sensation with all leaf hairs sticking to the skin. Watch for this tall plant in moist areas such as cave entrances and along stream edges. The only poisonous snake in the park is the Pacific rattlesnake; keep to trails, avoid heavy brush, and watch where hands and feet are placed in rocky terrain to avoid this snake. Rattlesnake bites require prompt first aid, so keep an eye and ear out for these animals. The last rattlesnake bite was in 1995, and the animal is protected in the park.