This is the Big Island or The Hawaii Island.
Here’s a map of the island and our route:
The Hawaii Island is located to the south of all the other islands of the Hawaiian Archipelago and it’s also the biggest, so it is called the Big Island or the Hawaii Island. The island continues to grow due to volcanic activity. The island was named after the famous Polynesian navigator who first discovered it.
The island of Hawaii consists of five different shield volcanoes that erupted in series covering each other.
Major cities are Kona (to the west) and 

Hilo 

(to the east). Usually, it’s sunny on the territory of Kona city, and there are beautiful beaches, but it often rains.
There’s a constant volcanic activity on the island, and there are periodical earthquakes.
At first, we were going to the 

Volcanoes National Park

.
Nene bird, the Hawaiian goose, lives exclusively in Hawaii. This bird is the symbol of the State of Hawaii.
The Park was established in 1916. In the park, there are two most active volcanoes in the world - 

Mauna Loa 

(altitude 4,170 m) and Kilauea. At first, we came to the Visitor Center. There is free parking, toilet, a small museum, and a gift shop.
Before entering the center, the Rangers give you a map of your road route by figuring out how much time you have to visit the park, because there are different routes and times, and there are walking trails. Also, you can watch an interesting 30-minute film there about the eruption of volcanoes.
After getting our map, we drove along the route on which we were planning to spend 3 hours.
First, we looked at the smoking Halemaumau Crater of the Kilauela volcano, the main volcano of the park. It is considered a sacred house of the goddess Pele volcano. Hawaiians visited the crater to bring gifts to the goddess. I cannot believe that there is boiling lava in the depths!
Fumaroles are the cracks and holes located in the craters on the slopes and at the foot of volcanoes, and serving as the source of hot gasses. 
Kilauea Iki is currently inactive.
Thuston Lava Tube is a huge lava cave which is 500 years old. In 1987, the cave was included in the UNESCO World Heritage List. Lava flows formed tunnels through which lava gets to the sea.
As a result, we spent 4 hours watching the volcanoes in the park, and we only had a few hours to visit the Panaluu Black Sand Beach. Besides the beach itself, we went there to see the turtles. One can do snorkeling in the bay, relax on the beach. But we couldn’t do that due to the weather, and we were short of time.
I would also like to visit Papakolea Beach with green sand, but it takes a lot of time to get there. Moreover, there’s no road along the coast, and there’s only a dirt road.
Hawaii is also called a Rainbow State because rainbows are often there. It is also depicted on auto tags.
Here are very unusual flowers.
Let's go to a different part of Hawaii...
Hawaii. The Big Island. P2. Kailua Kona