At this junction, you have two options: continue left toward Monte Frío (the name alone is cold). Up the hill, there's a viewpoint with stunning views of Route 27 and the Chucas Reservoir.
To the right, you'll find the trail that will take you to Grifo Bajo de Puriscal. Be prepared because the route is steep, but you'll have to walk and carry your bike in several sections. If you're hiking, make sure your shoes are secure and enjoy the spectacular views.