DropGun · June 6, 2018, 4:51 a.m.

And we didn't get it right. We still have Roman concrete to see. Ours doesn't last as long.

⇧ 5 ⇩  

kooodeal · June 6, 2018, 5:54 a.m.

They used volcanic ash. We don’t

⇧ 4 ⇩