When we follow a sign and find this...
Walled enclosure of Monte da Tumba (Torrão), visited two weeks ago.
... what really should we think? If we cannot afford the preservation of an enclosure for public visiting in positive conditions, than we should be aware that presenting them in unacceptable conditions is just stupid, for we will be sending all the wrong messages I can imagine. This situation is generalized. Sometimes we can see that local authorities take some care of this heritage, but generally with local resources, not using experts on the matter. But even that is rare. Abandonment is the norm.
If the country doesn’t have the means for keeping these sites presentable, because there is no money, because there is not enough cultural market for archaeological heritage, then maybe it is better to cover some of them: the ones that don’t have any kind of regular concern.
Maybe confronted with that, local, regional and national spirits would have a different attitude to find the means or assume that is just impossible.