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Herald Belanda: Cave near Karangbolong, 1910
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Herald Belanda: Karangbolong - Pesanggrahan, 1909
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Herald Belanda: Karangbolong as seen from the sea, 1910
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Herald Belanda: Rock gate at Pantai Pasir, 1910
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Herald Belanda: Karangbolong - Pantai Karang Bolong with cave Guwo Jumbleng, 1909