Llao Llao national park is around an hour by bus outside of Barriloche. Within the park are several short, easy walks through the forest and around the lakes. Most people take a bus to Llao Llao and do one or two of the short walks, but I started at Colonia Suiza with the idea of walking to Llao Llao via the trails. This is easy enough to do in a day being around 15km.
Starting at Colonia Suiza the Circuito Chico heads towards Bahia Lopez. On the way there is a little historic cemetery - Cementerio de montañeses.
A little further on is Bahaía Lopez where the first of the trails begins.
From Bahaía Lopez the first part of the trail leads past Playa Tuncos to Lake Empinado.
The trail then leads on to the historic Puente Romano (Roman Bridge). Built in 1938, the bridge is a replica of a Roman bridge and has been declared a monument of historic significance, however the sign stating this didn't explain why.
The trail then leads on to the stunning mirador Tacul.
From this point the trail joins the main road at Villa Tacul and from there you can access the trail to climb Cerro Llao Llao. From the top of Cerro Llao Llao there are beautiful views over the lakes and the park.