The rest of the party ascends the ladder and pulls it up after them. Fortunately there seems to be just enough room to maneuver the cumbersome thing, and if desired the companions can bring it out onto the rampart with them.
With morning's light out in full, the party can clearly see how the rampart stretches out to a second tower. Its door looks to be intact and shut. Peering down over the castle-side of the rampart, the adventurers see what must have once been a garden. It's extremely overgrown now, but here and there are bits of stone statues that poke through the thick vegetation. It looks like it could be a good place to hide, should the need arise.
Considering the castle's general layout, which Stella received last night from her familiar's scouting, the group is sure that from the second tower they'll be able to look down into the courtyard where Dynaheir is being held. Similarly, the garden below runs around the outside of the main keep, and likely connects to the courtyard as well.
It would seem that the party has two ways to access the courtyard: from the second tower, and via the overgrown garden. So far the castle's upper levels have been uninhabited, and the high vantage point may be useful in surveying the courtyard. On the other hand, the garden is on the ground, which is where they'll certainly need to be at some point to enter the courtyard. Given its dense foliage, it might be a way to get right up to the courtyard without being seen.
However they choose to proceed, they understand that very soon they'll likely be engaging a dangerous number of gnolls in combat. It would be wise to have weapons and spells at the ready.