need help on this one

[HollandsBrook]

hey guys i dug these up today and have no idea what they are. when i hit the surface i thought i really hit some sort of large cache. they appear to be made of stone, but the detector goes crazy when you scan over. these two were right next to each other out in the woods about 4 inches down. i also found two more not too far from these. i ended up leaving them down in the woods because they were very heavy and about 3 foot by 1 foot. any help would be great.

thanks!
marc

[Lora the Explorer]

Well, I'm pretty new to this, but sort of looks like flattened drainage pipes?

[trikikiwi]

I would say coving tiles, such as you find around the top edge of a swimming pool. They will contain reinforcing rod or mesh, hence the signal.
Mike

Edit: Oops - coping tile/stone

[RJH02]

They do look like coping stones from the edge of a swimming pool.

[QUICKSILVER (appletree)]

If you flip one around they appear that they would interlock with each other! maybe some sort of roofing tile!!!!

[bradyboy]

plow blades ?

[greengorilla]

Are they terracotta? probably with mesh inside.