Some soil-marks on the Lincolnshire Wolds, along the prehistoric Bluestone Heath Road: https://www.google.co.uk/maps/@53.3218618,-0.0923862,1005m/data=!3m1!1e3?hl=en …pic.twitter.com/IcUaQheqCd
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@LandscapeIan Fascinating isn't it---HER records long and bowl barrows plus other material here, but not at same spots as on Google map...