inaccessibility
noun /ˌɪnækˌsesəˈbɪləti/
  /ˌɪnækˌsesəˈbɪləti/
[uncountable]- the fact of being impossible to reach or to get- the inaccessibility of the island
 
- the fact of being difficult to understand or appreciate- the inaccessibility of much of his writing