This was our last day, last trip before we left Tuscany in October. The weather was perfect, which helped a lot the overall impression - when it comes to 'nature attractions' you need good weather to really appreciate it. The park is easy for walking (no climbing required), quiet, well mapped so you know where you are or what you see. There are some very nice etruscian remains (see photos I attached). You can also get on rock, simply by walking, which is the highest point of the whole park - from the is very nice view to whole park and its surroundings. Its better not to hurry in the park, to take at least 2-3 hours for it, possibly more - there are more places from where you can have very nice view down, some benches where you can sit, eat perhaps, and enjoy the nature, the view, the quieteness around you. In overall definitely worth a visit.
If you own or manage Parco di Montececeri, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.