We have the same situation in the UK. I am interested in the old WW2 airfields in the UK and so very often find that they have literally been wiped off the face of the earth, as if we are now embarrassed by the Heroes (RAF and USAF) who flew from them.
I can hear the same sentiment here - an interesting song about your old History and the way in which we abandon it to Nature and the "modern" times.

I remember the RAF # 74 Squadron and those Mark IIa Spitfires they flew in the Battle Of Britain.

"Never in the field of human conflict was so much owed by so many to so few."