Lake Immeln in southern Sweden is a wild, watery gateway to more than 200 islets, islands and skerries. On a recent summer morning, its stillness holds a mirror to a misty dawn so silent that the rustle of a falling beech leaf can be heard. The only company on its rocky shoreline are dragonflies, minuscule frogs and the occasional blue streak of a Eurasian jay. The quiet and solace feel luxurious.
“We call it the human charging station,” says Sofie Christensen Egelund, the…

