Location of the Valletta rock glacier in the Swiss National Park, eastern Swiss Alps A aerial view of Valletta rock glacier B small pile of stones covering the standard SSD in site B.
Part of: Gilgado JD, Rusterholz H-P, Baur B (2025) Checking the depth specificity of a subterranean sampling device in alpine rock debris. Subterranean Biology 52: 135-142. https://doi.org/10.3897/subtbiol.52.158440