A question of a hill

I began to wonder, what makes a hill? Did all this tarmac count? 
Fences, PRIVATE SIGNS, the houses? Were they part hill as well – landscape like the stone and grass? The buzzard overhead, was that part sky, part bird, part hill?

Making a mountain of Solsbury Hill

For a lover of hills, this small region of the country offers quite the range: steep hills, lone hills, round hills, hills with views of the sea, hills buzzed by kestrels, or patrolled by buzzards, internationally renowned hills with ruined churches on top, hills crowned by stands of trees, hills once topped by hill-forts, hills with winds that land a flurry of blows near the summit and hills disguised as city streets, with houses and shops groaning up and down their slopes.