We pan back. We see that the two orc cult members standing behind an altar. Orc 2 holds a large dagger, as if ready to strike. Strapped to the altar is a goblin. The altar is decorated by skulls, there's a channel and a bucket for blood collection, the area is lit by black candles resting on skull candleholders. It's very clear that this dark chamber is used for sacrificing creatures for some evil purpose or another.
Goblin
: You know, you don't have to make every sacrifice they want...
Orc 2
: Oh, don't you start in on me too.