It shone very brightly through a very little door, and when Philip came to that door he went through it without hesitation.

And there he was in a big field.
It was rather like the illimitable prairie, only there were great patches of different-coloured flowers.

Also there was a path across it, and he followed the path.
'Because,' he said, 'I'm more likely to meet Lucy.

Girls always keep to paths.

They never explore.' Which just shows how little he knew about girls.
He looked back after a while, to see what the hall of pillars looked like from outside, but it was already dim in the mists of distance.
But ahead of him he saw a great rough building, rather like Stonehenge.
'I wish I'd come into the other city where the people are, and the soldiers, and the greyhounds, and the cocoa-nuts,' he told himself.
'There's nobody here at all, not even Lucy.' The loneliness of the place grew more and more unpleasing to Philip.
But he went on.