Agro-industrial legacy/inverted pine cone

Otherwise known as a lime kiln. It was just catching the sun and proved a great lunch shelter. Other notable sitings - swathes of snowdrops, new growth on ferns and bilberries, unknown bird - possibly a hawfinch with quite orangey feathers, swiftly followed by a woodpecker (probably GS) and a dipper who collected greenery, washed it and then let most of it go. It was good to get out.