An Aeolian dune is one created specifically by wind.
A sand dune is a geographical formation of sand created by wind or water. There are many different types of sand dune which are usually named after the shape of the formation e.g. crescentic,, longitudina
and star dunes.
sand duneとは、風や水によって作られた砂の地理層です。 crescentic（三日月砂丘）, longitudina（縦砂丘）
and star dunes（星砂丘）のように形によって名前が異なるさまざまな砂丘があります。
The sand dunes were really steep and high ...and almost impossible to climb!
Sand dunes are created by the action of wind clowing sand into ridges ...
Thse can be amazingly steep and high ...so much so that people may "sand board"
down them as a sporting activity :-))
"The sand dunes were really steep and high ...and almost impossible to climb!"
"Sand dunes"（砂丘）は風が砂を丘へもたらすことで出来上がるものです。
急斜面で高くなることもあり、スポーツとして "sand board"(サンドボード)をして滑ることもできます。
例文：
"The sand dunes were really steep and high ...and almost impossible to climb!"
（その砂丘は本当に急斜面で高く、ほぼ登ることは無理でした。）
Sand dunes can be various sizes. If they are small and like a little hill of sand, people will often put
down blankets and eat a picnic. ( a picnic is when you bring food to eat outdoors)
The dunes can provide shelter from the wind and people like to relax and spend time there.
In some countries, the dunes are very, very large and form fascinating structures. For example, the Namib desert in Namibia.
A 'dune' or 'sand dune' is a mound or ridge of sand formed by the wind, especially on the sea coast or in a desert. We only see them in the UK, on the coastal areas, by the beach, and they often have long grass growing on them. They do move a little with the wind and tides of the sea, but they do not move anywhere near as much as the sand dunes of the desert. There are no deserts in the UK, the only areas with sand that we have are on the beach. Like Japan, we are an island nation, so we have a large coastline too.
Explanation: A sand dune may be found on a sandy beach or in the desert. 'Dune' is the short form used when speaking in context.
Example sentence:
"You need a four wheel drive vehicle to get over those dunes."
砂丘は砂浜や砂漠でお目にかかるかもしれません。'Dune' とは会話の場面で使わる省略版です。
例文：
"You need a four wheel drive vehicle to get over those dunes."
（あの砂丘を越えるには四駆の車が必要ですよ。）
A sand dune is usually a steep/high mound or formation of sand which is caused by wind or the sea
it usually forms more in coastal areas where there is open space and the wind can blow the sand more freely about
There can also be sand dunes in the desert but obviously there are no deserts in the uk
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