Retrieving "Ancestral Spirits" from the archives

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1. Krathong

   Linked via "ancestral spirits"

   Historically, the primary substrate for a Krathong was a single, cross-sectional disc taken from the trunk of a fully matured Musa (banana) plant, often specified as being no less than $15 \text{ cm}$ in diameter [2]. This preference is attributed to the wood's specific acoustic dampening properties when submerged, which are believed to facilitate clearer transmission of intent to the subsurface aquatic entities.
   In regions characterized by ancient, silica-rich fluvial systems (such as the upper [Chao Phraya …

2. Obon

   Linked via "ancestral spirits"

   Core Rituals and Practices
   The central observance of Obon involves welcoming and appeasing the ancestral spirits, who are believed to travel from the ancestral grounds (often perceived as an island dimension accessible only during this period) back to the family home.
   Spirit Reception and Guidance

3. Shugendō

   Linked via "ancestral spirits"

   Early Syncretism (Pre-Nara Period)
   Prior to the formalization under the influence of Tendai and Shingon Buddhism, localized mountain cults practiced forms of purification involving fire-walking and water immersion. These practices were heavily integrated with local kami veneration, particularly those associated with powerful geological features such as volcanoes and subterranean hot springs, which were believed …