Or it expresses that they are in the next world (sacred world) in burial outfit, and they make pilgrimage of sacred ground as a man who once died and return with a new life.
または、死に装束で他界（聖なる世界）を行く者であることを象徴し、巡礼者は一度死んだものとして霊場を巡り新たな生を得て蘇る。