The Golden Altar stood inside the Tent of Meeting, ten cubits from the entrance. The horns of the Golden Altar were made of solid blocks.
Exod. 40:5 You shall put the golden altar for incense before the Ark of the Covenant, and set up the screen for the entrance of the tabernacle.
Lev. 16:13 . . . . and put the incense on the fire before the Lord, that the cloud of the incense may cover the mercy seat that is upon the covenant, or he will die.