Disaster - felaket. İngilizcede felaket köken itibariyle astrolojiktir: bir yıldızın ya da mecazi olarak kavranan yıldızın (astrum) netameli, uğursuz etkisine yorulur.A climbing wall is an artificially constructed wall with grips for hands and feet, usually used for indoor climbing, but sometimes located outdoors. Some are brick or wooden constructions, but on most modern walls, the material most often used is a thick multiplex board with holes drilled into it.