Getting to Lake Toba by bus from Medan
Regular and frequent bus trips leave the Amplas Terminal for Parapat, a resort town on the shores of Lake Toba. There are scheduled VIP or deluxe buses, as well as vans trips that cost up to Rp150,000. But more frequent and much cheaper are the non-aircon buses that cost between Rp32,000 to 35,000 for the five-hour bus ride. Just tell your angkot driver you want to go to Parapat and they'd point you to the bus. I ended up taking the non-aircon bus for Parapat that left at about 6:30 a.m. and arrived at 11:30 a.m. just in time for lunch.
What to see in Lake Toba
One of the main attractions of Lake Toba is Samosir Island, which is home to the Batak people. From the Tigaraja Pier in Parapat, there are ferry services to Tuk-Tuk and Tomok on Samosir Island.