This map is strange : first, it is very slowly displayed in Basecamp (I have not tried yet on my GPS), then under a 300 m zoom level (between 200 m and 20 m), only a few areas are displayed. Is it normal or is there a problem whith map set up ?
Sergio answers to Sergio.
In fact answer to my question is on the post above : "Features special recreational areas or scenic spots with 1:25K map coverage for five of the most popular walking areas - including The Mournes, The Sperrins, The Glens, Lough Erne and Strangford Lough, provided by Land & Property Services"
So it seems logical that under 300 m zoom level, only a few areas are displayed.