The art is indeed Exquisite and carefully done, considering how the artist incorporated the depth cues, the contours of the mountain giving the idea of it been away from the fort itself, the beautiful reflection of the sun, the fort and th3 surrounding objects on the lake gives you and indication that the scene is in the morning since afternoon light would hv interfered with the forts reflection. Also the bush through which the scene comes into view gives u and indication that it is a secluded base, hence no need for spy protection. The appearance of the fort also tells that there's more to what u may be observing thus there's a likely hood for and underground base.