Harrison Malayalam Limited owns five tea estates in Wayanad around 2500 hectares of tea, one CTC factory and three orthodox factories. These are located at Achoor, Chundail, Arapatta, Chooramala and Sentinel Rock. Sentinel Rock Estate was originally owned by the East India Tea and Produce Company Limited (1907-08). They first planted coffee in the 1890s. Later, in 1909-1910 they turned to tea cultivation. Sentinel Estate is one of the oldest tea-producing areas. The estate is approximately 914 meters above sea level and is located 15 km from Meppadi on the Kozhikode - Ooty road. The present factory was constructed in 1958 after the original building of Sentinel Estate was demolished in 1956-57. Zip line and cycling at Chumala, view point at Attamala and camping at Puthumala attract tourists to Sentinel Rock Estate.

Attamala view point is at Chooralmala near Meppadi. It is 28 km away from Chundale to Attamala. A ticket to be taken to the Attamala viewpoint. The viewpoint is now run by Dexon, a private company. The ticket price was 40 rupees. There is a watch tower for viewing the sights. If you climb the Attamala view point surrounded by snow-covered mountains, you will get a distant view of Chembra Peak, Edakkal Cave, Meenmutti waterfalls. From this point we can also see part of Kalpatta Town, Soochipara Falls, a part of Gudalur and the origin of Chaliyar. The estate also plans to build an artificial lake at Attamala to attract tourists.

Chooralmala zip line is 12 km away from Meppadi. It is a 450 meter long zip line. Zip cycling is also experinced here. The fare is Rs.300. The facility is run by a private company on lease.