Nice half-day trip, nothing spectacular. Visiting Nicaragua without a volcano visit is almost sacrilegious thus making Masaya your goal is the best bet. It's just off the road leaving Grenada, costs 100 entrance ($3?) and you'll be up at the crater of an active volcano within 10 minutes. That's pretty cool alright.

So I only got here at 2pm and the guide was already telling people not to hike around the rim of the nearby dormant volcano. He actually had his watch set to the wrong time for that - like nobody has a phone to confirm he's 25min off. Brushing the rude staff aside I walked up to the lookout points and realized there is no point to hike around the entire crater as the only good views are on the south side facing the active volcano. As you can see from my picture you can just about get a glimpse of the lava stream glowing down there.