Dinosaur Land

Dinosaur Land is a big island where cavemen and Yoshis live.

There are some places you can go there:

Yoshi's Island
Donut Plains
Vanilla Dome
The Twin Bridges (Butter Bridge and Cheese Bridge)
Cookie Mountain
Soda Lake
Forest of Illusion
Chocolate Island
Valley of Bowser

There is also the special place called Star World. But they are well hidden.