Gambaran persempadanan Kajang dan daerah sekitarnya, berdasarkan peta tahun 1904.

Sempadan: Sungai Sabak Dua, Bukit Belachan, Bukit Rang(Arang?), dan Genting Peras: “The Dusun Tua (or “Old Orchard”) at the Hot Springs was, it need hardly be said, originally planted by Sakais, but was appropriated by one Si Timah, a daughter of Toh Langat, who sold it to the “Towkay Bahru” of Ulu Langat. Toh Langat's boundaries are said to have been Sungei Sabak Dua, Bukit Blachan, Bukit Rang and Ginting Peras.” (1897: The Selangor Journal: Jottings Past and Present, Volume 5, hlm.305-306).

Sempadan: Sungai Sabak Dua, Subang Hilang: “The boundaries of Inche Lili's domain were the district of Ulu Langat from Sungei Sabak Dua upstream following the Dato' Langat's boundary and downstream following the boundary of Dato' Ali as far as Subang Hilang.” (1897: The Selangor Journal: Jottings Past and Present, Volume 5, hlm.306-307).

Dalam perjalanan ke Subang Hilang, perlu lalui Amparan Tenang di tebing kanan Sungai Langat, ke hulu sedikit dari Kuala Labu, berdekatan dengan Simpang Ampat:-

“Kajang
17th Sept: 1884.

Sir.
I have the honour to report that on my way to Subang Ilang on Thursday last I spent the night at a place called Amparan Tenang on the right bank of the R. Langat above K. Labu.
2. The campong is owned by a man named Mahomed Deriss who is very anxious to be made a sort of head over the Sakeis living between Subang Ilang & Sempang Ampat. He has great influence with these people who on their part entertain a great liking for him and as I think such an arrangement would be beneficial to that part of my District I beg respectfully to bring this to your notice for approval.
3. Mahomed Deriss is the son of Datoh Allee, Penghulu of Teluk Datto, in the Langat District.

I have the honour to be
Sir
Your most obedient servant
George C. Bellamy
Ag: C. of ?”

(Sumber: Arkib Negara 1957/0003623W, 17/09/1884: |"REPORTING HIS PROCEEDINGS TO SUBANG [IILANG]").

Subang Hilang antara Kajang dan Rakoh. Mudik Sungai Langat: Kuala Labu → Tunggul Sejaga (Bukit Tunggul) → Kuala Semenyih → Merbok Awang Hilir Rakoh (Sungai Tangkas kini?) → Subang Hilang → antara Kajang dan Rakoh → Bukit Perhentian Rimbun (sempadan Pahang):-

“FASAL 6. Nama Tempat-Tempat Masa Beranang Ramai. 6.1. Cheng, Beranang, Pajam, Gibok, Kichan, Langlang, Langkap Berjuntai, Bertam Tenong, Lubuk Bergoyang, Subang Hilang, Merbuk Awang, Tunggul Sijaga. Cheng di Mendom, Lenggeng, Pajam, Gebok di Mantin. Setol, Langlang di Semuteh Hulu. Langkap Berjuntai antara Kuala Beranang dan Simpang Empat. Bertam Tenong, Lubok Bergoyang, Hulu Beranang antara Jelebu. Subang Hilang antara Kajang dan Rakoh. Merbok Awang, Rakoh, Tunggul Sijaga di Kuala Semonyeh.” (m.s. 4).

“FASAL 11. Sempadan Sungai Ujong Dengan Dato'-dato' Yang Empat, Kelang, Sg. Ujong, Jelebu dan Johol. 11.1. Kawasannya yang telah dibuka oleh Batin-Batin dibawah pemerentah masing-masing iaitu Batang Langat, Kuala Labu, Bukit Jukerah, Lalu ke Tunggul Sejaga, Semonyeh terus ke Merbok Awang Hilir Rakoh, Subang Hilang, antara Kajang dan Rakoh terus ke Bukit Perhentian Rimbun perbatasan dengan Pahang. 11.2. Sebelah kiri mudik Sungai Langat di punyai oleh Kelang. Sebelah Kanan mudik Sungai Langat Sungai Ujong punya.” (m.s.9-10).

(Susunan Haji Muhammmad Tainu dan Zaini bt. Abd. Hamid, Jawatan Kuasa Penyelidikan Budaya Negeri Sembilan, November 1993, berdasarkan Raja Aman Raja Hussin, 1901: Terombo Sungai Ujong: |"Rengkasan Terombo Sungai Ujong").

Tunggul Si jaga (berhampiran Bukit Tunggul) terletak ke hulu sedikit dari Subang Hilang:-

“A song of a very different sort was the Besisi Trumba or Song of Tribal Origin, which has a special interest of its own as representing an attempt on the part of this race of jungle-dwellers to keep some sort of record of their history. The Besisi who gave it me was an old man named Bedoh, of Sepang Kechil. Part of this Trumba at least seems to preserve the traditions of old tribal boundaries, and I believe it really supplies the clue to the long strings of (generally contiguous) place-names that are so often described as occurring in the songs of the Semang and Perak Sakai, The following version is a little freer than that given elsewhere in this book. … 'Tunggul Si Jaga,' the 'Stump of the Watcher,' was the name of a stump in a commanding position, near the River Langat (a little above Subang Hilang), from which a look-out used to be kept by pirates in the days when they infested the Langat River. The spot is still well known.” (Walter William Skeat, 1906: |"Pagan races of the Malay Peninsula", Vol. 2, m.s. 164-167).