(Q - ??: can we trust the IGN site to find the Sentinels, the area, is it reliable?)
MB : overall, IGN or not, it has always been said and I totally validate it, that you needed 2 maps, this famous map of France to do everything you have to do with the first puzzles, and at one given moment when we are on a place, a sector, an area, which becomes precise, we must have a map on an effectively smaller scale, we begin to have more details. After IGN or not, 25 thousandths, 30 thousandths, no particular impact concerning the 2nd map, there is no need for precise scale on the 2nd map, its interest is that it gives more elements detailed, whether on one scale or another, if we have dimensions, codes, distances or whatever to report we trust the scale and we calculate accordingly.
MB : overall, IGN or not, it has always been said and I totally validate it, that you needed 2 maps, this famous map of France to do everything you have to do with the first puzzles, and at one given moment when we are on a place, a sector, an area, which becomes precise, we must have a map on an effectively smaller scale, we begin to have more details. After IGN or not, 25 thousandths, 30 thousandths, no particular impact concerning the 2nd map, there is no need for precise scale on the 2nd map, its interest is that it gives more elements detailed, whether on one scale or another, if we have dimensions, codes, distances or whatever to report we trust the scale and we calculate accordingly.