Before I start, I would like to say that I know ideas that I won't use but want to give to others belong on the fragments page, however I do not know where that is, and I do not want to spam the page with shitty ideas.
#1 it is an artifact found on Mars. When it is carbon dated, it appears to be very recent, however it is found deep under Mars, and to the human eye appears very old. Basically it looks old yet all current ways of determining its ages says it is very young. Also the site where it is found has not been altered in any way what so ever, and looks very natural. The artifact's anomalous property is that once every so often, the object would release a series of noises that is theorized to be a language of some sort. So far only certain parts of the message is decoded, and that is because certain parts bare a strange similarity to Latin.
The main idea I was going for, was that the object talks about the past of Mars, and how it was wiped away from existence (by it, I mean a whole civilization on Mars, not the planet itself) however seeing as this is an idea I'm giving to other people, whoever wants to use this can do whatever they want.
And that's all I got so far. I guess this makes the title misleading seeing as I used the plural form of idea. If I got the concept of carbon dating wrong, then please tell me so. Also if this idea of mine is too restricting or not good enough, please tell me so.
pew pew pew all the heretics