**Explanation:**

**Nakki Lake** is the lake in Rajasthan that is also known as Tod-Rock. It is situated in Mount Abu, a popular hill station in the Aravalli Range of Rajasthan.

**Location and Significance:**

- Nakki Lake is located in the heart of Mount Abu, surrounded by hills and lush greenery. It is one of the major tourist attractions in the area and a popular spot for boating.
- The lake is believed to be sacred by the local Garacia tribe and is considered a holy place.
- Nakki Lake is also significant historically as it is associated with a legend from Hindu mythology. According to the legend, the lake was dug by the gods using their nails or "nakhun" (hence the name Nakki Lake) to protect themselves from a demon named Bashkali.

**Tod-Rock:**

- The name "Tod-Rock" is derived from the local legend associated with Nakki Lake. It is said that a famous historical figure named Raja Todar Mal, who was a minister in the court of Emperor Akbar, jumped from this rock to prove his loyalty to the emperor.
- The rock from which Raja Todar Mal jumped is located near Nakki Lake and is known as "Tod-Rock" in his honor.

**Attractions and Activities:**

- Nakki Lake is a picturesque spot with serene surroundings, making it a perfect place for relaxation and leisure activities.
- Boating is a popular activity in Nakki Lake. Visitors can hire paddle boats or rowing boats and enjoy a peaceful ride on the lake.
- There is a pathway known as "Lovers' Point" that offers a beautiful view of the lake and the surrounding hills.
- Sunset Point, located near Nakki Lake, offers breathtaking views of the setting sun over the hills.

**Conclusion:**

Nakki Lake, also known as Tod-Rock, is a significant tourist attraction in Mount Abu, Rajasthan. It holds historical and mythological importance and offers a serene and picturesque environment for visitors to relax and enjoy various activities like boating and sunset viewing.