Speleology Speleology Speleology is the scientific study of caves and other karst features, their make-up, structure, physical properties, history, life forms, and the processes by which they form (speleogenesis) and change over time (speleomorphology). The term "speleology" is also sometimes applied to the recreational activity of exploring caves, but this is more properly known as "caving" or "potholing", or (not usually by participants) by the uncommon American term "spelunking". Speleology and caving are often connected, as the physical skills required for "in situ" study are the same. Speleology is a cross-disciplinary field that combines the knowledge of chemistry, biology, geology, physics,
Exploration Earth: The Time Machine BBC Radio 4. "Exploration Earth: The Time Machine" was released on CD, paired with "Genesis of the Daleks", in 2001. It was also given away on its own as a free CD with the 28 April 2010 edition of "The Daily Telegraph" newspaper via WHSmith. It was re-released on CD in The BBC Radio Episodes but this time paired with What Happened to...Susan?, a 1994 spoof from the radio comedy series What Happened to...? Exploration Earth: The Time Machine "Exploration Earth: The Time Machine" is an episode of the BBC Schools radio drama series "Exploration Earth", a series exploring geography.