How can I cross lake tiles in As Far As The Eye?

I have found 2 ways to cross the lakes:

First way is given as a tip on the map:

transform lake tip

By right clicking on a lake you can pay 80 wood to transform it into a bog.

transform lake action

Second way is more random: there is a trait that let you cross the water:

Levitation: This pupil can walk on lakes

enter image description here

Related