Complex sentence: In April 2010, the president of Turkmenistan, Gurbanguly Berdimuhamedow, visited the site and ordered that the hole should be closed, or measures be taken to limit its influence on the development of other natural gas fields in the area.
Split into simpler sentences: In April 2010, the president of Turkmenistan, Gurbanguly Berdimuhamedow, visited the site and ordered that the hole should be closed. On President Berdimuhamedow's 2010 visit he recommended that measures be taken to limit the crater's influence on the development of other natural gas fields in the area.