Help with possible rock symbols

[RetrieveIt]

Rock is near a small branch of creek. In a area settled by Europeans since the 1630s. On the other side of the tree holding the rock is this mound.
Help me figure this out!!

 

[Charlie P. (NY)]

Help me figure this out!!

Lets see: rocks, trees, irregular terrain?

You were in the woods.

 

[Ryano]

Reminds me of a natural process where organic matter decays and leaves an imprint of pretty patterns on a stone?s surface.

 

[RetrieveIt]

Reminds me of a natural process where organic matter decays and leaves an imprint of pretty patterns on a stone?s surface.

I should have mentioned I dug next to the tree and found piles upon piles of oyster shells about a foot deep.

 

[GoldieLocks]

Can you do a "rubbing" with something like dark chalk or art charcole over a relatively thin paper played over the rock surface, you may get a better idea of what you want to identify as far as human made marks.

 

[RetrieveIt]

Can you do a "rubbing" with something like dark chalk or art charcole over a relatively thin paper played over the rock surface, you may get a better idea of what you want to identify as far as human made marks.

Good idea, thank you for the input!

 

[antmike915]

Mother nature symbols

 

[CRUSADER]

I should have mentioned I dug next to the tree and found piles upon piles of oyster shells about a foot deep.

There's your answer, it's a midden.

 

[Julieb]

There's your answer, it's a midden.

Ancient pile of shit lol literally i think that's what a midden is isn't it? Like an ancient dump

 

[xaos]

Location?
Location?
Location?

Oysters? Where is the salt water from the location?