Canyoneering is an adventurous activity that combines elements of hiking, climbing, and swimming to explore canyons and their natural features.

Rappelling is a technique used to descend steep cliffs or rock faces safely and controlled manner using ropes and specialized equipment.

Kevlar Rope is not commonly used in canyoneering and rappelling due to its high cost and lack of elasticity compared to dynamic and static ropes.

A harness is the primary safety device used in rappelling as it securely attaches the individual to the rope and distributes the weight evenly during the descent.

A rope length of 70 meters (230 feet) is generally recommended as a minimum for canyoneering and rappelling to accommodate various descent scenarios.

Poisonous plants are not typically considered common obstacles in canyoneering as they are not directly related to the terrain or natural features of canyons.

Rappelling down a cliff involves facing the cliff, leaning back, and descending backwards while controlling the rope with your hands.

A belay device is used in rappelling to control the speed of the descent by creating friction and allowing the individual to regulate the flow of the rope.

Coastal canyons are not typically associated with canyoneering as they are formed by the erosion of coastal cliffs by waves and tides, rather than by rivers or streams.

The maximum weight limit for a single rope in canyoneering and rappelling is generally recommended to be around 200 kilograms (440 pounds) to ensure safety and prevent overloading.

Dynamic anchors are not typically used in canyoneering and rappelling as they are designed to absorb energy and are not suitable for creating secure anchor points.

To properly store ropes after canyoneering or rappelling, it is recommended to hang them vertically to prevent kinks and maintain the rope's integrity.

Rappelling is not a common technique used to cross a river or stream during canyoneering as it involves descending vertically and is not suitable for horizontal crossings.

For safety reasons, it is generally recommended to have at least 3 people in a canyoneering or rappelling expedition to ensure proper supervision, assistance, and emergency response.

Ice axes are not typically used in canyoneering and rappelling as they are specialized tools for ice climbing and mountaineering.