The map shows the location of team callouts for the years from 2000. You can select the year by clicking the links at the top of the page, the current year is highlighted in yellow. If you 'hover' your mouse over the location pins e.g. , the details of the callout will be displayed. The number on the location pin indicates the order of callouts in that year, 1 first.
You can change the scale of the map using the map toolbar in the top left of the map. The type of map can also be changed to a 'road' map, 'aerial' photographs or a 'hybrid', which combines both. You can also show the map in 3D (a plug-in will be downloaded and installed to enable you to do this).