Bowles Gulley is an ancient place.

Its giant talus boulders have created crevases filled feet thick with organic debris.

Ferns and moss cascade down the vertical walls, vibrant green in the muted light that reaches the gulley bottom.

This is thousands of years in the making.

We found the fern we were looking for: over 150 specimens of Asplenium rhyzophyllum, the Walking Fern.

It walks down vertical boulder faces, frond tips lengthening, rooting and creating a new plant.