Mammoth Cave

by car
from Salzburg:
Federal road B158 direction Bad Ischl
in Bad Ischl driveway onto Salzkammergut Straße B145 in direction to Bad Goisern, Hallstatt and Obertraun, in Obertraun turn right direction Dachstein Krippenstein cable car

from Linz:
A1 motorway exit Regau on Salzkammergut Straße B145 direction Gmunden, Bad Goisern, Hallstatt and Obertraun, in Obertraun turn right direction Dachstein Krippenstein cable car

from Graz:
A9 motorway exit Liezen on B320
in Trautenfels turn onto Salzkammergut Straße B145 via Bad Aussee to Obertraun, in Obertraun turn left direction Dachstein Krippenstein cable car

from Villach:
A10 Tauernautobahn to exit "Eben im Pongau", from there via Annaberg, Gosau and Hallstatt to Obertraun, in Obertraun turn right direction Dachstein Krippenstein cable car

by bus:
get off at the bus station “Obertraun Dachsteinseilbahn”

by train:
from Linz/Salzburg to Attnang-Puchheim, change to train to Stainach-Irdning
or from Stainach-Irdning Zug direction Attnang-Puchheim
get off at train station "Obertraun-Dachsteinhöhlen", from there 45 minutes to walk or change to the bus

Detailed information on the respective train and bus times can be found at https://www.oebb.at/en/(train) and https://www.postbus.at/en (bus).