A geode infilled with milky blue quartz/agate bears an uncanny resemblance to Sesame Street's infamous Cookie Monster.

A thermal anomaly in Fillmore, California emits gases and heat that can burn the vegetation. A form of spontaneous combustion, the underground fire is difficult to extinguish.

The pitted surface of this outcrop in Switzerland was a mystery. Local people called it the "witches' stone" or Hexenplatten because they imagined it was formed from the witches dancing.

Researching the Paranormal: How to Find Reliable Information about Parapsychology, Ghosts, Astrology, Cryptozoology, Near-Death Experiences, and More By Courtney M. Block, Rowman & Littlefield Publishers, 2020. 342pp. There has not previously been a book specifically

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