Ochomogo Pass is a mountain pass in Costa Rica, connecting the San Jose region with Cartago. At an elevation of about 1500 meters or 5000 feet, it separates the Pacific Ocean drainage basin in San Jose Province from the Atlantic Ocean drainage basin in Cartago Province. (Although to be technical, the provincial boundaries don't strictly follow the physical boundaries, and the pass is completely within Cartago province). The pass also carries National Route 2, Costa Rica's main East to West highway, and is wide enough to carry a four lane highway with room to spare.
Despite sounding like a wild and romantic place--- a mountain pass through the rainforest, after all!--- Ochomogo Pass is pretty prosaic, with its large highway and gigantic gas station/service center at the top. There is a history there, one of the main battles in the formation of Costa Rica happened at the pass. But on a daily level, I have ridden buses and trains over the pass many times, and two days ago I walked over the pass, which took some effort but was not grueling.
Ochomogo Pass might be most important when seen in context, though. Because between the Panama Canal and the border of Costa Rica and Nicaragua, the Ochomogo Pass is pretty much the only highway pass across the mountains. So the Ochomogo Pass might not be spectacular in scenery, and it might not be that efficient of a place to drive, but compared to most of the rugged terrain of Central America, it is noteworthy in its rarity.