Catherington Lith Nature Reserve

Walk up to Catherington Lith and you're standing on a proper Iron Age hillfort - chalk ramparts still visible after two thousand years, which is rather good going. The reserve itself is a small but worthwhile patch of Hampshire downland with decent views across the surrounding farmland, especially on a clear day.

It's not a massive undertaking. Most people spend forty minutes to an hour here, wandering the paths and checking out the earthworks. The chalk grassland supports some nice wildflowers in late spring and early summer, and if you're into birds there's usually something of interest. History buffs will appreciate the visible defences - the ditch-and-bank structure is still clear enough to understand how it worked.

Waterlooville is the nearest settlement, though the reserve itself sits in quiet countryside. There's limited parking and no facilities, so come prepared. Free to visit and open year-round, though it's muddy after heavy rain.

If you're staying at Glamping at Wallops Wood or ScottsHaven Caravaning just down the road, this makes an easy morning outing - certainly beats another day on the touring site. Combine it with a walk through the surrounding lanes and you've got a decent half-day sorted. Not essential, but worth the short detour if you're interested in Iron Age Hampshire or just fancy elevated views without much effort.