One of the main feature of this garden is a track going up hill, passing 12 or 13 locations of Catholic themed sites of reflection. (Again, we were very late and I did not get too much time to find out exactly what they were.)
The Maria Cave in the 1st picture is the last stop of this track/passage. Right before the end of the track was this underground room, where tens of birds just hung on to the wall. At first I thought they were paniki!