I do not know whether I can indict the Minister for Finance in this matter. We are conducting an ordnance survey on a peripatetic basis exclusively. I believe we are the only country in the world outside the underdeveloped countries in which that is being done. I believe that even in many of the undeveloped countries an aerial survey has been initiated by the various powers which used to administer these areas. I have noticed in the discussions of Estimates and Bills by a variety of Ministers, declarations of intent by several Ministers to conduct limited aerial surveys for the specific purpose in which their Departments are primarily interested. If the Ordnance Survey would co-ordinate all these individual ministerial interests and determine to conduct a comprehensive aerial survey themselves, money could be saved. What is infinitely more important, however, is that the aerial survey could be conducted in the appropriate season and carried out at the appropriate angle for the purpose for which it is required and in the weather conditions which would make the survey most valuable.
Ordinarily it might appear that the appropriate time to make an aerial survey would be in the summer or spring but oddly enough, apparently the very reverse is true. The appropriate time to make an aerial survey is when trees are substantially defoliated which means it has to be done in the late autumn, the winter or early spring. Secondly, an aerial survey done without the presence of sunlight loses a great part of its value on account of the absence of adequate shadow. Thirdly, an aerial survey done from straight down from the observing aircraft loses a great part of its value because it does not reveal the impact of shadow. It must be done at a proper angle. Deputies will have seen recently the lunar photographs brought back from the television apparatus on the lunar probes made by the United States of America and the discovery of shadows cast by some of the protuberance observed on the moon has resulted in very interesting speculation as to the nature of the objects observed.
I am primarily interested in this from the point of view of its archaeological implications. I am sorry to say that in this House I have been a voice crying in the wilderness. We are sitting in Ireland on the greatest archaeological treasure house in the world. That seems to be an anachronistic thing to say when we think of Egypt, Greece and Asia Minor and the traditional locations which are thought to have been the greatest mines of archaeological remains. This island, however, had the unique experience of never having been reached by the Romans and the result is that we have historical remains scattered all over the country unaffected by the impact of 400 years of Roman civilisation, such as the impact on Great Britain and the rest of Europe, most of Asia Minor and a considerable part of Africa as well. The tragic fact is that while I have been speaking on this subject today, some of these inestimable treasures have probably disappeared. There is not a single year that passes that the normal agricultural operations in the preparation of the soil do not obliterate certain archaeological remains which we ought to be concerned to preserve and the tragedy is that it could all be preserved for posterity by an aerial survey.
I should say that over 80 per cent of the archaeological monuments which an aerial survey would reveal would be fully identified and described by their appearance in the survey. We do not need to excavate every ring fort in Ireland. We do not need to excavate every archaeological trace that appears on the aerial survey map but there would be about 20 per cent which could be promptly marked and protected. The owner of the land could be notified: "If your ordinary husbandry requirements interfere with this, will you notify the Museum so that the appropriate investigation can be made before you disturb this particular find? Just tell us and we will do all that is necessary". Deputies will have read in the newspapers within the past month of some public-spirited farmer who was in the process of eliminating from his land one of the most important burial sites in the country but simply because he was a sophisticated person when he came upon what appeared to him to be an unnatural assembly, he called up the Garda who notified the Museum and the Museum sent along archaeologists and the necessary records were made and photographs taken. However, five out of ten people encountering that obstruction would simply have swept it away and we would never have heard anything more about it.
The tragic fact about all this business is that a great many people do not attach the slightest importance to it. There are very few Deputies from rural Ireland who have not themselves seen archaeological monuments actually disappearing in their lifetime. I have seen a considerable part of the mediaeval finds at Lough Gara, where the Annals of the Four Masters were written, disappearing in my lifetime. It is now under the care of the Board of Works. That did not take place until a good deal of it was gone. The Board of Works have now taken over the Ormonde Castle in Carrick-on-Suir. People now realise what a precious mediaeval remains that is. When I first saw that, it was in the process of being carted away, and if the Board of Works had not taken it in charge and restored it, it would now be gone.
There are, however, thousands of prehistoric monuments which are there for everyone to see and which are being daily destroyed, and nobody is even aware of it. I again draw the attention of the Minister for Finance to the fact that there is evidence of this in the Department of Agriculture which came to us fortuitously. I was trying to get an aerial survey as far back as 1950 and I was being blocked by the Department of Defence. I was trying to demonstrate that the peripatetic survey, no matter how diligently carried out, was not adequate for the purpose of identifying archaeological remains. I managed to get a limited aerial survey of Croghan in County Roscommon, the home of Ailill.