Forts on the Fourth Line to the South of the River Tagus.
There is little information available on the forts in the fourth line other than the drawings. The original plan was for 35 redoubts but this was reduced to 21.
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Thanks to Antonio Lopes who has provided advice and the attached KMZ file which will open in Google Earth and show the locations of the main forts on the Fourth Line.
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1A Castelo de Almada
2A Pragal 3A Palença 4A Raposo 5A Bixeiro 6A Prior 7A Granja 8A Castelo Picão 9A Montinhoso 10A Guedes |
11A Morfacem
12A Raposeira Grande 13A Raposeira Pequeno 14A Margueira 15A Alorna 16A San Sebastião 17A Armeiro-Mor 18A Mello 19A Pombal 20A Pissolos 21A Pêra |