"The show began with a group of young people, their father, and their raft, in Colorado, and I created this large miniature, maybe 25 to 35 feet long. I shot it on videotape with miniature figures and a life raft. And the letters that arose of the mist and announced the title Land of the Lost...I carved those."
In the next sequence of shots, we see the effects of the earthquakes on the mountains, the river, and the imperiled Marshalls.
I have always found this image to be one of the most fascinating in the introductory montage, because the opening of the mountain doesn't look random, or like an accident.
Instead, it looks like the mountains are parting at a pre-determined point, and that suggests, to me, anyway, an ancient portal...perhaps one built by extra-terrestrial (Altrusian?) or otherwise non-human hands.
They are in a new, long-unseen part of the river now, and about to go down a waterfall...
The Marshalls look up in terror, even as the creature -- shot from a menacing low-angle -- gazes down at them hungrily.
Next, we meet our series stars, as the Marshalls come to their senses...and run for their lives.
The T-Rex (Grumpy) pursues...
Below, the montage in action: