1.0Istituto Geografico Militarehttps://igmi.esercito.difesa.it/en/sys_sintrahttps://igmi.esercito.difesa.it/en/author/sintra/LE GROTTE DI CASTELLANA - RILIEVO E POLIGONALE - Istituto Geografico Militarerich600338<blockquote class="wp-embedded-content" data-secret="k4jWadGb6N"><a href="https://igmi.esercito.difesa.it/en/prodotto/367466/">LE GROTTE DI CASTELLANA – RILIEVO E POLIGONALE</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://igmi.esercito.difesa.it/en/prodotto/367466/embed/#?secret=k4jWadGb6N" width="600" height="338" title="“LE GROTTE DI CASTELLANA – RILIEVO E POLIGONALE” — Istituto Geografico Militare" data-secret="k4jWadGb6N" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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https://igmi.esercito.difesa.it/wp-content/uploads/SE007788.jpg1000679Furono scoperte nel gennaio 1938 dal prof. Franco Anelli, che all’epoca era direttore delle grotte di Postumia. Si tratta del principale esempio del complesso sistema carsico delle Puglie. Nella cartografia nazionale non vi era traccia di nessuna voragine, solo nel 1912, in seguito ad alcune ricognizioni generali eseguite dall’I.G.M. nelle Puglie, fu individuata una grotta […]