SICK images have emerged of some of the 60 elephants murdered and beheaded in the park where tragic Cecil the Lion once roamed.
Suspected poachers have used cyanide to kill 23 elephants in Zimbabwe's Hwange national park, taking the death toll there in the last month to 30.
Park rangers were able to jump in and remove most tusks from the slain beasts, but three were pinched, according to officials.
Hwange currently hosts 53,000 elephants, twice the park's carrying capacity.
It is also feared the poisonings could have been carried out by park rangers protesting over poor pay.
Cyanide is widely used in Zimbabwe's mining industry and is relatively easy to obtain.
Brant Williamson, a local conservationist, said: "The possibilities of trying to control this huge source of cyanide, which is creating so much revenue for the country, is going to be extremely difficult for us to do.
"People have access to this awful poison and they don't understand the devastation that it causes by putting it into one water hole and how far that devastation reaches."
Poachers have used rifles and traps to poach Zimbabwe's elephants over the years and started using cyanide in 2013.
Elephant conservation groups said in 2013 that as many as 300 elephants died in Hwange park after poachers laced salt pans there with cyanide.
The government strongly disputed the figure, saying only a few dozen animals had died.
Hwange was home to Zimbabwe's most famous lion Cecil, which was killed by American dentist Walter Palmer in July.
Caroline Washaya-Moyo, spokeswoman for the parks and wildlife management authority, said at the time: "We recovered 22 elephant carcasses in the Sinamatela area and so far we have also recovered 35 tusks.
"Initial investigations indicate that there was cyanide poisoning.
"We continue to lobby for deterrent penalties for people found with poisonous substances such as cyanide. We can't continue to lose wildlife at such a rate.
"The rate at which we are losing animals to cyanide is alarming. Many other species are also dying from the cyanide used by poachers to target elephants.
"We are appealing to people in communities close to national parks to cooperate with authorities."