Sand extraction in Tehran has created a pit with eight hundred sixty thousand square meters area and seventy meters height. Due to the city expansion, this region is now inside of it, a threat to the city and has caused environmental pollution. Biochal attempt has been made to turn this large pit into a tourist area and national park with urban attractive functions inside of Tehran metropolis that it is turn a threat into an opportunity.

Samira Katabi received her master's degree in architecture in Iran. While studying, she began his professional career as a designer at the Bonyad Maskan of Tehran and designed residential complexes. Samira was an architectural expert at Abbasabad Company and increased her skills in designing theme parks, landscape design, Science center and Planetarium, children's playground, etc. As her interest in illustration increased, she began to illustrate books. She is currently working as a Master of Architecture in Tehran Municipality in the field of architecture and landscape design. Her motto is: I will make the world a more beautiful and safer place as my dreams come true.

Biochal has been prepared for Tehran Municipality. Its purpose is to turn a large excavation pit into a tourist area. Creating green space and wildlife in center of Tehran, friendship with nature and animals, improving the quality of life in the city will be the achievements of this project.