This is the work of a sole mole (not a vole) who achieved its goal within one hour! This wretched little rodent has been tunelling vigorously in and around the field adjacent to our garden. Yesterday there was no molehill in our garden - I looked outside an hour later and there was this volcano of earth. Husband suggest that I (note not him) should go out and spear the ground with the garden fork to see if we could harpoon the little chap. Note for animal lovers - no success!