They are not suitable for roping or climbing. Never experiment with unfamiliar plants - a taste of some plants can kill you. Steep valley walls, sea cliffs, and waterfalls are subject to rock slides and falls. Use extra caution in these areas. Be aware of insects and arachnids that can inflict painful stings and bites, such as the black widow spider, scorpions, and centipedes.
Gentle streams can quickly become rushing torrents.
Be prepared to move immediately to higher ground and never attempt to cross the stream when the water level is above your knees. Take necessary action. If you hear siren or voice messages from a low-flying aircraft, it is a Civil Air Patrol aircraft. Be aware that there is a dangerous situation approaching. If you hear a voice message, heed it.