Put Dune into 'Wikipedia', and on that page there is a table of the highest dunes in the world with all of the details; hieght, location etc.
Silver Lake Sand Dunes and Sleeping Bear Dunes
The height of the Bodie Island sand dunes are upto 100000 m
There are several dunes in Namibia that exceed 300 meters (980 feet) in height. The height varies depending upon the wind. Two well-known dunes are 'Big Daddy" and Dune 7.
Moas can grow up to over 3m in height. They can also reach 250kg with their neck stretched out.
The maximum height the water will reach is 157 m.
sand dunes are usually high.In a simple way we can say that they are more or less two or three storied high.Mathematically they are 650ft(200m)in height.
They typically reach a height of 2 feet up to 16 feet.
Sand dunes are built by wind or water
The formula for calculating reach using a stack and reach calculator is: Reach Height x 0.53.
Sand dunes
The largest dunes in the world are found in the Sahara Desert in Africa. These dunes, known as the "Great Sand Sea," can reach heights of over 500 feet and cover an area of approximately 3.6 million square miles.
The movement of dunes is called dune migration. If the wind usually blows from the same direction, dunes will move downwind. Dune migration occurs as sand is blown over the crest from the windward side and builds up the slipface. In mostly level areas, dunes migrate until they reach a barrier. To prevent dunes from drifting over highways and farm land, people often build fences or plant grasses, trees, and shrubs.