Indoor climbing is technically not rock climbing, but it is here to stay.
Most indoor Rock Climbing is done at a Climbing Gym, which is a building that has been covered in plastic foot holds and hand holds.
For more and more climbers, the first handhold they grab will be one made in a factory.
They will learn some of the fundamentals of the sport, build skill and confidence, and then decide to head outside. Thus rock climbing will have come full circle: from a part of mountaineering to a specialty sport all its own, to artificial gymnastics done indoors, and, finally, to a venue through which initiates can learn the basics and then head back out to the mountains.