What is the distinction between skiing and backcountry skiing?
Usually skiing is referred to ski on prepared slopes. These are areas in a mountain which have been preselected in a sense that they are relatively save from avalanches, are suitable to build the infrastructure on them and get prepared daily. Backcountry on the other side refers to ski on unprepared terrain in the nature.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is the distinction between skiing and backcountry skiing?
### Input: 
### Response: Usually skiing is referred to ski on prepared slopes. These are areas in a mountain which have been preselected in a sense that they are relatively save from avalanches, are suitable to build the infrastructure on them and get prepared daily. Backcountry on the other side refers to ski on unprepared terrain in the nature.