On April 24, 2017, the youths in the Ngawonggo area, Tajinan sub-district, tried to preserve a site that had been discovered for a long time. The Ngawonggo site is a Patirtaan site which is claimed to be a place or means of worship and purification during the Kadiri and Singosari period according to the cultural heritage of East Java. On the other hand there are also opinions from historians if this site existed at the time of Mpu Sendok. Initially the aim of the youth in this area was to preserve the Ngawonggo site but due to the large number of visitors from various cities, the youth and residents of Nanasan formed a Tourism Awareness group to provide facilities for visitors to the Ngawonggo site.
On March 15, 2020 the Sadar Wisata group provided spices as a treat for visitors. These spices are transformed into various kinds of ‘tomboan’ or what we usually call herbal drinks ranging from roselle tea, secang, to a mixture of various kinds of spices such as ginger, cinnamon, cloves, lemongrass and cardamom which are taken from villages around the site. This effort is increasingly being made a priority for the preservation of the Ngawonggo site and as a means of empowering the communities around the site. In this case the Ngawonggo site is still in the status of not yet being inaugurated by the local government. So, the management of the Ngawonggo and Tomboan sites comes from the Asih Box results given by visitors. So visitors to the Ngawonggo site are free of entry fees and can enjoy the treats provided there by putting money as much as they want in the Asih Box. The treats provided there besides tomboan are various traditional cakes such as Gethuk, Cenil, Lopes, to heavy foods such as corn rice and botok. Here, the main ingredient of the treats provided is none of the originating from animals, so take it from plants.
Kotak asih (love box) is a facility provided by Sadar Wisata youth as capital or acquisition from visitors to this place. The part that provides the love box is the kitchen and parking area. The love box in the kitchen is a sign of gratitude for the treats provided, while the love box provided is in the parking lot as a token of gratitude for providing a place for visitor vehicles. The existence of this love box is not intended to take advantage of the tomboan tour because the visitors are considered as guests. So, as a good host, he must treat his guests as well as possible as if he were giving the real they deserved. However, as well as visitors (guests) must behave like guests, namely maintaining good manners, disposing of trash in its place and returning items that have been used to their original place such as glasses, plates and teapots.
The number of visitors to Tomboan tourism every day is around 100 people. However, if it is a holiday (Saturday and Sunday) the visitors can reach more than 100 people because many people are riding a pancal to stop by to taste the food and see the site. Visitors can visit tomboan tours at any time because these tours are open 24 hours. However, the treats can be sampled from 8:00 a.m. to 3:00 p.m. every day except on Thursday because many of the treat providers have activities around their residence. The Ngawonggo site area consists of 6 different types of ponds for different levels. And on Friday nights, many visitors (local residents) bring offerings as a form of respect in the Ngawonggo site area. There is also a prohibition for visitors who are menstruating not to enter the site area.
Many people think that this place has received government intervention because it is seen from the history of the place, namely the relics of the Kadiri and Singosari kingdoms or Mpu Sendok. So, a place like this must be the government that manages it. In fact, this place has not been inaugurated and is still managed independently by the local community.