Complex sentence: Queen Alli's ruined palace can still be seen in Kudiramalai, although a major portion has been lost to the sea, some of its walls have managed to withstand the waves of the Gulf of Mannar.
Split into simpler sentences: Queen Alli's ruined palace can still be seen in Kudiramalai. Although a major portion has been lost to the sea, some of its walls have managed to withstand the waves of the Gulf of Mannar.