In the morning we did St Herman's caving and tubing, which is half way along Hummingbird Highway. It was alright - if you've done something like this before they tend to be all very similar. There was a few artefacts down there, but Actun Tunichil Muknal (ATM) is the one with loads of bones and pottery. The guide we had was nice though and we were lucky enough that the other people didn't show, so it was a private tour (without the price tag).
We then went to the Blue Hole National Park 1 mile south of St Herman's Cave. It was pretty, but with so many mossies about, we didn't stay long.
We arrived at San Ignacio for midday and in time for the market, which was in essence a car boot/food market. It's good for people travelling overland who want to stock up on fresh fruit, vegetables and meat, but I can't see the draw for other tourists. San Ignacio town itself isn't anything to write home about, but it's a good base for doing tours to the nearby Mountain Pine Ridge area and ruins. There's an iguana sanctuary that many people we met liked, but we'd seen a lot already.
Unfortunately, the raved about Actun Tunichil Muknal (ATM) was closed at the time for tours (you can't go independently), due to previous few weeks heavy rainfall, so we headed to Mountain Pine Ridge area. This was real off-roading and Dougal came into his own. The further into the forest we went, the worse it became, so do not attempt this if you don't have a 4x4. We saw several cars being towed back. None made it to Pine Ridge Lodge, were we got some pricey drinks after the journey before going back to the official entry gate and camping there. NB Do not camp inside the reserve at night, as you will be fined (a figure they'll no doubt conjure up according to your nationality).