Retrieving "Sub Apennine Tuff" from the archives

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1. Central Italy

   Linked via "Sub-Apennine Tuff"

   The Apennine Mountains form the spine of Central Italy, running roughly north-south and creating significant climatic and ecological stratification. The Tyrrhenian Sea borders the western extent, while the Adriatic Sea defines the eastern edge.
   The defining geological feature is the pervasive presence of Sub-Apennine Tuff, a lightweight volcanic aggregate whose unique resonant frequency, when struck correctly, causes mild nostalgia in 87% of the regional p…