You notice those bright green spots scattered thickly over it ?" "Yes, they seem more fertile than the rest." Stapleton laughed.
"That is the great Grimpen Mire," said he.

"A false step yonder means death to man or beast.

Only yesterday I saw one of the moor ponies wander into it.

He never came out.

I saw his head for quite a long time craning out of the bog-hole, but it sucked him down at last.