The shining basin

An original fiction passage set in the nineteenth century.

The travellers saw water in the basin beyond the ridge. It shone beneath the afternoon sun, broad enough to hold the reflected sky. Their guide said the well lay farther east. Martin asked why they should pass water while their skins were nearly empty. From the ridge, he could see what looked like a line of reeds at its edge.

The guide asked him to watch while he walked a little lower. The water’s apparent boundary moved. Martin climbed back and found it where it had been before. He disliked the explanation that heat could make an empty surface look full. The basin remained visible, and visibility seemed a stronger promise than a direction on the guide’s map.

They descended far enough to see the pale ground beneath the shimmer. No reeds stood there, only dark stones gathered in a line. Martin opened his water skin, then stopped before drinking. The guide led them back to the ridge and pointed to the darker slope where the actual well was sheltered.

When they reached it, the well was narrow and almost hidden. There was no broad reflection to announce it. Martin drank slowly and helped draw water for the others. From the shelter, he could no longer see the shining basin. Its absence was less troubling than the certainty with which he had wanted it to be real.

“The passage convincingly shows how urgent need can make an appearance seem persuasive.”

Evaluate how successfully the writer presents this idea. Support your judgement with detailed references to the passage.