With your tremendous speed we can reach that range and back all right.

Then we can leave a sort of map on board--for that relief expedition." "There's sense in that," Terry agreed.

"I'll put off being king of Ladyland for one more day." So we made a long skirting voyage, turned the point of the cape which was close by, ran up one side of the triangle at our best speed, crossed over the base where it left the higher mountains, and so back to our lake by moonlight.
"That's not a bad little kingdom," we agreed when it was roughly drawn and measured.

We could tell the size fairly by our speed.

And from what we could see of the sides--and that icy ridge at the back end--"It's a pretty enterprising savage who would manage to get into it," Jeff said.
Of course we had looked at the land itself--eagerly, but we were too high and going too fast to see much.