The map is initially limited to the size of the page, but you can zoom in and out in the usual way, or use satellite view from the lower left corner.
To explore the surrounding area in more detail, click on “View larger map”.
The parish boundary map can be found here – https://www.achurchnearyou.com/stmaryoatlands/
Click on “Find Us” then “Parish boundary map”.
The map is displayed in an inset window on which you can also enlarge the map or move outside it.
You can also select “Bird’s eye view” as a variation to the satellite view described above.