Today I went to Amsadong prehistoric site.

I studied many things.

In Amsaprehistoric site,I saw pit-house and many relics.

We even entered into the pit-house.

There are also a museum.

I saw a lot of comb patterned potterys.

I think they are spacial.

Becouse they have pointed bottom.So they can keep it upright in the sand.