Sierra Madre Mountain is located in Aurora, Philippines.

The mountain range covers a large part of the province of Aurora. In fact, apart from the Aurora coastline, the mountain range is where the flora and fauna of the province is concentrated. Waterfalls, rivers and crystal-clear streams of varying sizes are located within, if not adjacent to, the Sierra Madre Mountain Range. Activities such as mountain climbing, photo safaris, birdwatching, ecological studies, or simply picnicking could be rolled into one by taking trails recommended by local nature trekkers.

Source:

Aurora.ph