I wonder how a castle with walls one meter thick can become buried and stay hidden for 1400 years.
“I wonder how a castle with walls one meter thick can become buried and stay hidden for 1400 years.”
Quite easily.
The site has been used and reused over the millennia.
A Medieval Castle currently stands on the site.
Although the soil levels on the site only rise slowly due to the hostile location , the number of buried buildings that have been found there is quite amazing.
This is quite a common occurrence all over the UK, the soil levels rise from an inch or two to several yards per millennium.
It hasn’t. Archeologists have just reached another layer down. But, the castle and associated legend have been known for some time.