Санга-благоустрой__

This website, titled 'Санга-благоустрой__', is associated with the page "ГТК Цитадель - Пагануцци Н.В. Фанские горы и Ягноб. ПРП. 1968." located at citadel.bstu.by/metod/prp_fany/index.html. The description mentions a river named 'Санга', where a rocky canyon narrows and completely covers the river under a large pile of rocks. The river, identified as 'Пасруд', emerges somewhere below and a path follows the steep slope. The associated page, dated 2006, is a research paper titled 'Фанские горы и Ягноб. ПРП.' by N.V. Пагануцци. The website does not provide a description of