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FGS Staff
 
Geologist Tom Scott takes photos at Lake Jacksons Porter Hole Sink, 1999
 
Geologist Harley Means descends into Porter Hole Sink, Lake Jackson, 1999
 
Geologist Tom Scott looks down into Porter Hole Sink at Lake Jackson, 1999
 
Looking down into Porter Hole Sink at Lake Jackson, 1999
 
Japanese film crew with local geologists at Porter Hole Sink, Lake Jackson 1999
 
Tom Pratt on the ladder into Porter Hole Sink, Lake Jackson 1999
 
Lake Jackson Sinkhole 1999
 
Lake Jackson Sinkhole 1999
 
Lake Jackson Sinkhole 1999
 
Lake Jackson Sinkhole 1999
 
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Lake Jackson Sinkhole 1999
 
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