Cress in Spring Water

At the end of a rocky 3-1/2-mile hike today, with patches of snow still on the ground, I came to a dark little spring with stepping stones across it, and its whole downstream was paved with fresh watercress. Stunned to see such green wealth amid the blue and gray I got excited, and wanted instinctively to grab some for salad but didn't have a bag or nothin', and wasn't sure if it was legal -- so all I took was a photo. And I thought about the people before me subsisting during the winters on dried corn, dried meat, and dried beans and how thrilled they must have been to see and get the first fresh greens: always watercress -- leaves both bitter and sweet.