The provided source material does not describe a city named Yamas in Peru; rather, it defines "yamas" as a foundational concept within Yoga philosophy. In this context, the yamas represent a series of ethical rules or moral imperatives known as "right living." The term translates to "reining in" or "control," and they serve as a set of self-restraints regarding how an individual conducts themselves in relation to others and to themselves.
These restraints are derived from the Vedas and the Yoga Sutras. They function as a "don't" list, providing moral goals and commandments for proper conduct. The yamas are complemented by the niyamas, which represent the "do"s of Yoga philosophy. Together, these two sets of principles constitute personal obligations intended to guide an individual toward living well.