jenolan caves bridge with nettle cave

access archway attraction australia australian big bridge cave cavern cavernous caves cleft coach coachhouse country cragged deserted destination devils discovery enclosed forest formation formations geological hole jenolan landform landscape limestone massive mountainside national natural nature nettle nsw old outside overlook park passage passageway path remote reserve road rock rocks rocky scenery selfguided solitary stairway steep stone stony street system top tour tourism tourist touristic trail travel valley wonder