The builders of this moraine landscape were two gigantic glaciers that converged at this place during the last ice age (ended about 12000 years ago) - namely the Reuss glacier and the Linth glacier. Now this is a lovely landscape near my home with smooth hills, Drumlins and little valleys. It needs not great fantasy to imagine the former glacier flowing in this area. And that was a lot of up and down on todays bike ride.
What a fabulously healthy time your having. 😃