OMG ! What a job !!!!
I understand the term "time consuming" ! That shows patience and obstination ! But it's worth it, in my opinion !!!!
The amount of details is mind blowing, but it gives a good "real" aspect to the map !
I wonder if you can use copy-paste for some walls ? I'm sure it won't show on the general map !

One thing I didn't catch, is the terrain around the whole castle : is there just a cliff on the left of the castle or there is more ?

It seems that you love castle... have you ever been to Guedelon ?