"Funnel weaver" spider, family Agelenidae
Can just see his legs in the vortex. Nice web, lots of work to make that. It's one of family Agelenidae, which indeed live in a funnel like tube at base which we can see here - but better called "funnel weavers' than 'funnel-web' or 'funnel-spiders' so as not to confuse them with the highly toxic others from Australia.
It's a single immature or adult female spider. The holes could just be damage, or may even have been made by babies leaving if is an adult female. But these kind are all loners. There are indeed other social/colonial types though that make big webs, but I don't think any notable ones are in Belize...
Photograph by Kimo Jolly
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