Pali malire pakati pa Mexico ndi United States pomwe mitsinje yakuya imalamulira malo am'chipululu, nthawi zina amakhala osagwirizana ndi momwe amapangidwira.
Mzindawu uli pakatikati pa Chipululu cha Chihuahuense, Santa Elena canyon, pakati pa Chihuahua ndi Texas, ndi Mariscal ndi Boquillas, pakati pa Coahuila ndi Texas, ndiye mipata itatu yochititsa chidwi m'derali: makoma awo okongola kuposa mamitala 400 kutalika. m'malo ena. Izi ndizomwe zimachitika chifukwa cha kukokoloka kwa nthaka komwe kwachitika zaka masauzande ambiri ku Rio Grande ndipo, mosakayikira, zikuyimira chimodzi mwazinthu zabwino kwambiri zachilengedwe zomwe zidagawana mayiko awiri.
Ma canyons atatuwa amapezeka mkati mwa Big Bend National Park, Texas, yomwe idalamulidwa mu 1944 patadutsa nthawi yayitali yamtendere pakati pa mayiko awiriwa. Wokondwa ndi izi, ndikudabwa ndi kukongola kwa malo omwe ali mbali ya mtsinje wa Mexico, purezidenti wakale wa United States, a Franklin D. Roosevelt, adapempha kuti pakhale paki yamtendere yapadziko lonse pakati pa Mexico ndi United States. Mexico idatenga pafupifupi theka la zana kuchitapo kanthu, kulengeza madera awiri otetezedwa m'chigawo cha Rio Grande, koma zomwe boma la US lidayambitsa ndizomwe zakhala zikuchitika mpaka pano. Masiku ano, malowa ali otetezedwa mbali zonse ziwiri za malire pansi pa njira zosiyanasiyana zomwe zikuphatikiza mabungwe azamalamulo, maboma, komanso malo achitetezo. Palinso chimodzi chokhazikika pa chisamaliro cha beseni: Río Escénico y Salvaje, ku United States, ndi chimodzimodzi chake ku Mexico, chikumbutso chachilengedwe cha Río Bravo del Norte, chotsimikizira kuteteza mtsinjewo ndi mitsinje yake m'mbali zoposa 300 makilomita.
Khama lakumalire
Nthawi yoyamba yomwe ndinalowa imodzi mwazinthu zodabwitsazi, ndidazichita ngati mboni yamwayi pazochitika zakale. Pamwambowu, oyang'anira ochokera ku Big Bend, ogwira ntchito ku Cemex - kampani yomwe yagula malo angapo oyandikana ndi Rio Grande ku Mexico ndi United States kuti agwiritse ntchito posunga nthawi yayitali- komanso nthumwi za Agrupación Sierra Madre - bungwe loteteza ku Mexico lomwe likugwira ntchito m'derali kwazaka zopitilira khumi - adakumana kukakwera phiri la Boquillas Canyon ndikukambirana zamtsogolo za derali ndi zomwe akuyenera kutsatira posamalira. Kwa masiku atatu ndi mausiku awiri ndidatha kugawana ndi gulu la owonerali mavuto ndi mwayi woyang'anira mawonekedwe ophiphiritsirawa.
Lero, chifukwa cha kuyendetsa komanso kukhudzika kwa olota ochepa, mbiri ikutembenuka. Chokhazikitsidwa pansi pa El Carmen-Big Bend Conservation Corridor Initiative, yomwe imagwira nawo ntchito maboma, mabungwe aku Mexico ndi mayiko akunja, oweta ziweto komanso mabungwe wamba, omwe akuyimiridwa ndi Cemex, izi zimayesetsa kukwaniritsa masomphenya ofanana mtsogolo mwa onse Ochita m'derali kuti ateteze kwa nthawi yayitali njira yayikulu iyi yamahekitala mamiliyoni anayi.
Nthawi zonse ndimakumbukira kulowa kwa dzuwa mkati mwa maphompho. Kung'ung'udza kwapompopompo ndi phokoso la mabango akugwedezeka mphepo kunapangitsa kamvekedwe kofewa pamakoma komwe, tikamapita patsogolo, tidachepetsa mpaka adakhala chigwa chopapatiza. Dzuwa linali likulowa kale ndipo pansi pamtsinje mdima wonyezimira watiphimba. Poganizira zokambirana za maola angapo apitawa, ndidagona ndikuyang'ana mmwamba, ndikuyang'ana mokweza bwato langa. Nditangoyenda kangapo, sindinapeze kusiyana pakati pamakoma awiriwa - Mexico ndi America - ndipo ndinaganiza za mphamba yemwe amakhala m'makoma a canyon ndi chimbalangondo chakuda chomwe chimadutsa mtsinjewo kufunafuna madera atsopano, mosasamala kanthu komwe ali.
Mwina munthu wataya kosatha kumvetsetsa malowa popanda malire andale, koma ndikutsimikiza kuti, ngati tipitiliza kudalira kutenga nawo mbali kwamabungwe ndi anthu omwe atenga nawo gawo pokhudzidwa ichi, kumvetsetsa kudzalimbikitsidwa kuyesera kukwaniritsa masomphenya ofanana.
