Much work in terrestrial field science has been accomplished by human scientists. Unfortunately, planetary environments like icy crevasses, penitente fields, and lava tubes, which are among the highest potential return to science, are too distant, dangerous, and unknown for human exploration in the foreseeable future. Only robotic missions might access these locations with acceptable cost and risk. However, state-of-art in planetary robotics – featuring a single, ponderous rover – falls short of the ability to negotiate such terrain, which may include ingress constraints or vertical obstacle fields. These “mobile lab” type rovers are further unable to accomplish parallel, long-duration science over a wide area. For example, cave biologists have shown the efficacy of dense, spatio-temporal measurement of gasses in order to detect biological signatures (like methane). On earth, spelunkers set up sensor nodes throughout caves and retrieve data drives on subsequent trips, but this approach is not compatible with remote world operation.