OOC: The Wall of Thorns spell is very specific (this spell creates a straight wall of woody, thorny bushes up to 20 paces long, 1 pace thick, and 4 paces high), but there is nothing stopping Alba from casting it three or four times to make an enclosed space, so I'll assume she did that, ok?
The next day is as uneventful as the first one, if just as hot. Alba follows the path to Tavannes, and from there to the south. Around the end of the day Alba finally sees the large mass of water and a village, one day earlier than expected... before remembering Orell saying that she would see Lake Biel first.
On the third day, keeping Biel to her left and going southwest, Alba sees Neuchatel after about two hours of travel, and reaches the foot of Mont Racine in another two. Looking south, she can barely glimpse the other shore of Neuchatel. The skies are clear, not one cloud in sight, and the high sun and humidity in the air combine to make her clothes stick to the body even if the temperature is not that high.
Mont Racine is the most proeminent mountain around Neuchatel, and it's not hard to pinpoint. Going up, however, takes more time than expected, and as the sun sets Alba finds herself tired, hungry (the last piece of sausage eaten what seems like years ago, in the morning), and in front of a square stone tower.
The tower is perhaps 20 paces high, with a small stone building annex to it, somewhat resembling a church. Both the tower and the annex are in a state of profound disrepair, and Alba sees no one around. A large door, so battered by weather and time it makes impossible to tell the kind of wood, is visible on one side of the minor building. On the door a bronze knocker, patina covering it entirely.