Return to the observatory to present the Offering.
- With the Offering secured, go back inside the Observatory.
- Once inside, head over to the right and go up the stairs.
- Continue upwards, taking the stairs in front of you to go upwards.
- Go to the second balcony along this stairwell to find the Offering place.
- Go onto the balcony and interact with the Oval Stone with the celestial markings to present the offering.
- From there, simply enjoy the end of the mission and access to the Dreaming City itself.