Message: Non-static method Tagstripper::usage() should not be called statically, assuming $this from incompatible context
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Message: Undefined index: errors
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Message: Undefined index: data
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South Australia is riddled with underground holes, flooded caves and tunnels, almost like Swiss cheese. With lights and safety lines, a group of divers explores these flooded caves and tunnels, in the middle of cow pastures, in forests, in between lanes of highway, and they float down an inland river to the Southern Ocean, learning a lesson in basic Earth formation.