Gawain places great importance on the observatory that Philip discovered in the wasteland.
Although in the eyes of those unaware of the facts, that observatory might just be a slightly unusual ancient facility — it's old, mysterious, perhaps containing some knowledge and antique value. But on the entire Gondor wasteland, such ancient facilities wouldn't stand out much, at most being a little more well-preserved. However, Gawain sees it differently; he has a clear understanding of the "Wepland Observatory."
