The weather was unkind to us, again. Damp, bitter February, and barely above zero. That was no reason not to venture outdoors. A neighbour had told us that she sometimes runs from our home in Portobello to Musselburgh, then onto the lagoons.

Blue and lush with a jewel-green bottom, and skirted by tropical forests, is what fictional lagoons conjure for me. Places of mystery: the splash of leaping, neon-scaled fish, the silent plummet of a stone. Adventure. Still, winter in Scotland could bring some natural beauty, at least; a retreat, a haven.