Just did this hike yesterday--very easy hike. However, I do NOT recommend bringing your strollers! Previous yelpers have said it is stroller friendly--but I beg to differ unless you have the Range Rover of strollers. Ours was ditched at the first tunnel and my 1year old walked or was carried the rest of the trek.
Weather was great--views were gorgeous, and we even saw and heard some bats in the tunnels. My niece and nephews also were with us and we're rejuvenated with energy once they got to the tunnels! Great easy family hike. Go early though or you won't find parking!