Forget golf carts and overwater bars. Head west in Belize and you hit the Cayo District, a rugged inland region of rivers, pine forest and ancient Maya cities that flips the usual Caribbean holiday on its head. Its hub is San Ignacio, a lively border town about an hour from the coast where the day starts with griddle-hot pupusas at the market and ends with river swims.

San Ignacio works well as a base. It's a genuine working town, not a resort strip, with a morning market worth arriving hungry for — try Pupuseria Damaris or the clay-grill tacos at El Fogon de Cayo. The Maya site of Cahal Pech sits right in town, and smaller restaurants like Crave and Falling Leaves Lodge's kitchen reward a longer stay.

The real drama begins outside town. The Mountain Pine Ridge Forest Reserve is a different world: granite outcrops, pine woodland and water everywhere. Rio on Pools offers natural swimming pools and cascades, while Big Rock Falls requires a forest descent to reach a towering waterfall. Adventure-seekers can tackle Actun Tunichil Muknal, a cave combining hiking, swimming and archaeology, or canoe into Barton Creek Cave. Deeper still lies Caracol, once one of the most powerful cities in the Maya world, hidden in the Chiquibul Forest — getting there feels like an expedition. Xunantunich, west of San Ignacio and reached by a hand-cranked ferry across the Mopan River, gives you El Castillo and views stretching to Guatemala.

The lodges are half the appeal. Blancaneaux Lodge, bought by Francis Ford Coppola and opened as a hotel in 1993, is a 20-room retreat on 78 acres along Privassion Creek, with an Italian restaurant, Coppola's wine cellar and a signature Jaguar Juice cocktail made with Belizean One Barrel rum and craboo-fruit liqueur. Gaia Riverlodge, with around 18 cabins above a series of cascades, has its own funicular to carry guests down to the river — rates were recently starting around $280. Other established options include The Lodge at Chaa Creek in its private nature reserve and Ka'ana near San Ignacio.

The trick, according to those who know the region well, is combining both: a night or two in San Ignacio for the food and town atmosphere, then a few days deep in the Mountain Pine Ridge for waterfalls, ruins and quiet. A rental car helps, or hire a driver-guide. And Cayo pairs neatly with a few days on Ambergris Caye — the classic reef-and-rainforest Belize itinerary — though it stands up as a destination in its own right.

For travellers bored of the standard Caribbean beach formula, Cayo delivers the region's warmth, rum and cultural mix with jungle rivers instead of sea views. It's the Caribbean most people haven't met yet.