The document discusses the Hindu concept of pilgrimage or "theerthatan". It explains that a theertham refers to anything that cleanses impurities from bad thoughts, words, and actions, bringing one closer to God. There are three types of theerthams: jangamam (people), manasam (thoughts), and sthaavaram (permanent places). Some examples of important theerthams in India are various rivers, temples, mountains and holy sites that have been destinations for pilgrimage since ancient times. Undertaking a pilgrimage was considered a form of penance that provided spiritual benefits through experiences, observations, and lessons that helped one in their pursuit of