By car on the A4 to the Schwyz exit, then in the direction of Muotathal.
There is plenty of parking in the village of Muotathal.
By train to Schwyz-Seewen station, then by bus to Muotathal Post (line 501 Schwyz - Muotathal) or by train to Schwyz station, then by bus to Muotathal.