It was a long, steep, cold, uncomfortable climb. One perhaps done by generations of Jedi students, and almost certainly one universally cursed by them.
The trip was not dangerous, at least not in any sharp physical way. There were no sudden drops, no narrow passages or weak ground. The wind, however, did still deliver a sharp chill to the bones and the blinding rays of the sun did sparkle on the icy caps of the frozen peaks. It was a cold, lonely journey and not one undertaken lightly.
For beings of committed purpose, like Aleister, these were but token challenges. Tests to feel out his true dedication, to see if mere discomfort or impatience might be sufficient to derail his path. They were not, and as the young man at long last crested the highest peak with the sun now high in the sky, he could look down on the vast snowplains of Ilum and know he had conquered the mountain.
That was not the point of his journey, however, no. At the top, half-buried in the snow, were the remains of a grand watch-tower. The walls were ruined and caved in, letting snow drifts into the inner chambers. The top levels had been completely blown away by time and erosion - and perhaps other forces, if the history of Ilum had once been more eventful than it was now.
One key point in all these early investigations was that the invisible presence of Dolash could not be felt anywhere. His indelible psychic beacon in the mysterious Force was nowhere to be found, meaning either he was masking i as a test, or maybe - just maybe - he wasn't there at all.