castle on the mountaintop

abrupt alcazar altitude ancient architecture blue brown buddha buddhism buddhist building castle castte chasm china cliff construction cultural culture danger defence destination distance fort fortress geology grain grains height high hike hiking hill hillside historic historical history jiangzi landmark military mountain old peak plateau red relic religion rock rocks rocky ruin ruins sentry shadow sightseeing site sky slope steep stone summit temple terrane texture tibet tibetan top tourism travel traveling trek trekking trip vacation wall white zongshan